science-help

[quaint idol]

I won't appreciate u if you don't make your concepts strong

[raw socket]

ah

[thorny gyro]

Thanku for sending her the way of solving answers, that's what she really wanted@quaint idol

[raw socket]

Hinata thanks for your help too doee

[prime junco]

You wrote 60g instead of 60g/mol // u or da

[quaint idol]

Where

[thorny gyro]

She won't understand if we use units

[quaint idol]

The mass is 60g

[prime junco]

the mass is 60g/mol

otherwise you don't find mol

[thorny gyro]

Correct

[quaint idol]

He trans guy then wat did i write earlier

[prime junco]

i'm just talking about unit

[quaint idol]

Mass of 1 mole of ethasjdjcjd acid is 60g

[thorny gyro]

My pleasure, don't u go for any additional clz for chemistry?

[quaint idol]

No need

Well yes if he she wants to

[raw socket]

clz?

[thorny gyro]

Class

[thorny gyro]

Yea that's also correct 🤣

[raw socket]

I should maybe

I understand everything in chem except the mole concept

which is a big part I know

[thorny gyro]

Yea here in my high-school everything is scattered around mole concept

Either i was so bad at the beginning of the mole lesson, but my mom is a science teacher, so it went good for me

[raw socket]

ohh that is lucky

this is my first unit of chem so that is why I'm only learning like the most basic part of the concept

like the foundations

which my teacher explained horribly

[prime junco]

you wrote 60g instead of 60g/mol, that's what i mean

[raw socket]

some of my classmates get it some don't and got additional help elsewhere

[quaint idol]

Having science teacher at home gud

[thorny gyro]

Every teacher is like that😂 here our teacher never taught that lesson for us, i learnt that from mom,

[thorny gyro]

Not good, always science 😐

[quaint idol]

I learnt from internet

[raw socket]

yuppp

I actually have chem exam in 2 weeks

[thorny gyro]

Cool me too used to watch vids, in crash course

[raw socket]

so that is why im focusing on this now...

[thorny gyro]

Ohhh

I g2g guys, see u guys later

[raw socket]

I would have tried to understand the mole earlier but my class was moving along so I had to continue learning the other concepts

okayy

thank you again!

[quaint idol]

U have done calculus M

?

[raw socket]

me?

[quaint idol]

Yes n hiata

[raw socket]

nope I would learnt that next year

[quaint idol]

Hm i learnt that in 9th grade

Gtg

[raw socket]

okkk

[thorny gyro]

Not yet, my 1st year of high school

[raw socket]

woa wait first year

[thorny gyro]

And do anyone knows reasoning, my friend wants to know stuff about that @short herald 😂

[quaint idol]

Thats 9th grade innit?

[thorny gyro]

Yes

[quaint idol]

Mental aptitude?

[raw socket]

can I ask what country

[thorny gyro]

Nope, calculus is in maths no, it's an upcoming lesson

[quaint idol]

What ur age

[thorny gyro]

Ask @short herald

Im from srilanka

[short herald]

ah

[quaint idol]

Sinhalalalala

[short herald]

logical reasoning. stuff like alphanumeric series, analogy, blood relations, coding-decoding, deduction, syllogism.

[quaint idol]

Yup ofc

[thorny gyro]

Yesyess

[quaint idol]

Im frm India

...

[thorny gyro]

Hindi?

[quaint idol]

Hmm

[thorny gyro]

Acha,

[quaint idol]

Hmmmmmm

[raw socket]

ohhh

I'm australia

[thorny gyro]

Kaise hooo

[short herald]

woah- finally

[raw socket]

australia is so slow lol

like i like it slow

[thorny gyro]

Ahh

[quaint idol]

We all are frm cricket playing countries

😂😂😂

[raw socket]

but compared to other countries It is slow

[thorny gyro]

Yea me too a cricket fann😂😂 virat kohli fav

[quaint idol]

No need to butter

😏

I watch football more

[thorny gyro]

Then cheese? 😏

I really a fan of him

[quaint idol]

Oh rlly name the team he places in rcb

[stray umbra]

Anyone?

[thorny gyro]

Lpl

[stray umbra]

I am getting a diff ans

[quaint idol]

Ipl that is not Lpl

[thorny gyro]

Omg physics 😱

[quaint idol]

Not dipolr :(

[thorny gyro]

Yes lol , ipl

[quaint idol]

Dipole i meant

[stray umbra]

U all can chat in #general-chat

[quaint idol]

No

We wont

[thorny gyro]

😂

[stray umbra]

It's sci section-

[quaint idol]

Yes so w

Read the formula for dipole n stuff

[raw socket]

they were helping mee with science

[quaint idol]

No need to tell him tha 😏

[stray umbra]

Yh I did , But I am getting a diff answer

[quaint idol]

Well in that case..

[shell drum]

Did you give the vectors correctly?

[quaint idol]

Idk

[stray umbra]

Yeah I did

[quaint idol]

Yes hes vector strong

[shell drum]

Share the work ?

[quaint idol]

I was goin to read this book call science explorer princblahblah hall book for electricity and magnetism

But i dont think i will buy it😏

[quaint idol]

Just solve it n share your work😎

Hes feeling shy😏

To share his wrk

[shell drum]

Not really at a place where I can solve it for her Or else I’d already have done instead of texting

[quaint idol]

Np 👌👍 t

[stray umbra]

Can u just stop mispronouncing me

I am she /her

[quaint idol]

Sorry her

Your username says you are thefartusquished yo should have told your name is her

[stray umbra]

This guy is annoying ngl
U are not funny mhn

[raw socket]

u maybe could check the role it says she/her

[shell drum]

It’s in her roles

[stray umbra]

Exactly

[raw socket]

just for next time

[quaint idol]

Not in person

[prime junco]

You should probably resend your questions, some people will not scroll up to find it and the chat is now calm

[stray umbra]

Yh sure

[shell drum]

This looks correct to me except for the 20 V/m
E = 0.20 V/C-m

[stray umbra]

Then the options are wrong ig ,tysm <3

[subtle birch]

Anyone knows how to memorise the explanations of electrolysis ?

[quiet sorrel]

the thing u want to memorise? like all of them?

[hazy raptor]

Anyone know how to do part b?

[sand narwhal]

hi can someone help me with some bio homework message me pls

[thorny gyro]

Hi there, what's the answer? Just want to see if my answer is correct before telling you

[thorny gyro]

Hi, u can just ask your doubt here and someone will surely answer it ^^

[hazy raptor]

The answer is 0.0076

[frigid blade]

Hey yeah, whats your question? 😄

[thorny gyro]

ah that's no way near my answer...I'll let you know once I get it 😅

[hazy raptor]

thanks for the help!! i'm still confused as to how to get the answer

[thorny gyro]

Which grade are u in btw?

[hazy raptor]

I'm in year 11 rn

[quaint idol]

can anyone help

??

[copper mural]

Have a look if you get this

Do stoichiometric calculations in such ques

[hazy raptor]

Holy shit, thank you so much

[copper mural]

Ur wc

[hard hound]

Please help me create a pseudo code for that problem??

[hot willow]

Input List L
Create List A
Create List B
(Lists A and B are empty at this state)
For all element i in L :
if i is even then add i to List A
else (if i is odd) add i to List B
Display lists A and B

[hard hound]

Thank you

[frosty cedar]

Hi,can you recommend a youtube channel,website or any platform that I can learn physics from there?

[thorny gyro]

i like "the organic chemistry tutor" on youtube

he does physics too

[frosty cedar]

Well,i'll take a look.Thank you <3

[fleet sentinel]

can someone help me with this pls. i have no idea if i'm getting the right idea

[deft jetty]

Someone please solve this for me

[shrewd musk]

guys my physics mcq test is gonna be today, and im not at all prepared, as most of the questions will be of NEET/ IIT JEE level and in the future im not gonna take this exam....but since its the part of my tuition so i have to attend this weekly test,,,,,,wish me luck guys 😭 😭 🥲 😫

[minor minnow]

mol=koef u need to balance it 1st

[chilly idol]

2C6H14 + 19O2 -> 12CO2 +14H2O is the balanced eq so there would be 19 moles of O2

[thorny gyro]

https://youtu.be/yq-0FarhEv4

YouTube helps a lot :3

[chilly idol]

wayne breslyn is a beast

[thorny gyro]

Yessirr

[hard hound]

Please help me create a pseudo code😔

[near ocean]

How would I do this?

[outer walrus]

Change in gravitational potential energy = mass x g x height differential

Here 'g' is the gravitational constant equal to 9.8 m/s²

[near ocean]

So would this be right?

[outer walrus]

I'm not very familiar with the word 'winch' but if the injured climber is being pulled vertically up, then yes

The gain would be positive and equal to that value

[near ocean]

Yea hes being pulled up vertically

Thank youu 😄

[thorny gyro]

Hello guys

https://tenor.com/view/spongebob-squarepants-dance-happy-dance-歡快-gif-5084836

[willow lion]

is atherosclerosis the same as coronary artery disease?

[cunning crescent]

try #medic-help 🙂

[crisp cedar]

ANYONE KNOW WHAT IS THE FUNCTION OF VILLI IN THE LARGE INTESTINE

[willow lion]

Do you mean small intestine?

The main function of the large intestine is to reabsorb/absorb water according to IB level

[crisp cedar]

NO large intestine

thank you

[pale bison]

Can someone help me?

[outer walrus]

I think it should be B)

Since NaBH4 is a reducing agent

[thorny gyro]

Yeah it should be B
Reduction of ketone by NaBh4 in the presence of h2o

[outer walrus]

Thanks for the confirmation lol

I studied all of these a few years back for entrances so my memory of it all is somewhat hazy

[willow lion]

so phagocytosis produces antigens?

[pale bison]

ty

[thorny gyro]

No

[willow lion]

ok

[thorny gyro]

can someone explain this solution to me please

i dont get it

[quiet sorrel]

Ask me anything if theres something not clear ok?? 🤝🤗

[thorny gyro]

ohh tysm i understand what's in the pic, but what why'd they give this

ok ill try to help u give me a moment

[quiet sorrel]

@thorny gyro oh theyre tring to say the conjugate base of CH3CH2COOH is strong which is like if i have a weak acid its conjugate base is stong base

[thorny gyro]

wait is CH3CH2COO- a strong base then?

ok i tried to solve it ill show you but idk if its right ill have to check with someone

[quiet sorrel]

yeah it is but it has to dissolve in water which is written below

[near ocean]

How would I do this?

[thorny gyro]

so you get the moles

volume x concentration will give you that

then you mulitply that my the Mr you get the mass you need

[silver talon]

quick q

does the cytoplasm in a cell store water? or is it just the vacuole that does so

[unreal rivet]

the cytoplasm is about 80% water. So i think it does. https://en.wikipedia.org/wiki/Cytoplasm

[hollow fiber]

@tight ruin what do you mean

[tight ruin]

there was a research done about it i think

https://arxiv.org/abs/1906.05336

[hollow fiber]

Ughhh

This is so damn confusing

@tight ruin this article answers my question more or less https://www.quora.com/Physics-Does-anything-two-dimensional-exist-in-our-universe-or-is-it-just-theoretical?share=1

And it seems like 2d and 1d actually doesn't exist and it's totally imaginary

So all this time these 1d 2d and 4d I thought was real was a lie

[silver talon]

ohh got it. thanks!

[tranquil kayak]

https://www.youtube.com/watch?v=-zafJKbMPA8&ab_channel=EmilyCrapnell throwback

[midnight field]

Can someone solve this problem?

[viral sorrel]

are you familiar with collisions and conservation of momentum?

[midnight field]

Yes I got a and b correct
But for some reason I keep getting c wrong

[viral sorrel]

do a system with v1(a)m(a)=v2(a)m(a)+v2(b)m(b) and 2v2(a)=v2(b)

should work

[sand fern]

Ok so does anyone know how to properly draw a benzene ring

like an easy way

unironically cant do it properly

[tired silo]

1, wide v
2, vertical lines on wings of wide v
3, upside down wide v connecting 2 vertical lines
4, inner circle
(looks bad because im doing it using a mouse but doing the same on paper gives a good result)

just make sure wide v's have similar angle

[sand fern]

thanks

i hate the fact that i have to 'draw' in chemistry 😂

[tired silo]

yeah same, its even worse when i have to do it on lines in the exam

just ends up looking so messy

[sand fern]

yeah

[wide valley]

This was in the exam i just did

i only know that a proton pump decreases it

but dont know about the sodium channel

so if it was just the proton pump then is that literally a 50/50 chance of getting it wrong?

[thorny gyro]

Hello I had a question to ask how would I know if a carbohydrate is a polar or non polar because in my quiz I was being asked is glycogen and cellulose are both non polar or not I said they both are since polysaccharide are the large molecules and are non polar which doesn’t have any taste to it

But my teacher said they are polar because polysaccharides are made up of glucose and glucose is part of monosaccharides which are hydrophilic

So I was wondering to ask to find if a biological molecule is polar or not do I have to look at the type of carbohydrates what they are made up of so I know if the types of each carbohydrate polar or not???

This is my friend's question,I'd really appreciate if you could help me help her :)

[thorny gyro]

Carbohydrates are polar due to their composition. Ketones with linked polar hydroxyl groups consist of simple organic compounds such as andaldehyde.

Glycogen and cellulose are polar for they dissolve in water

But in some sources, cellulose is insoluble in water.

But it's slightly soluble.

[blissful jasper]

anyone know the conditions in which the Hardey-Weinberg principle cannot be applied?

[thick verge]

Does anyone know how to solve this physics exercise?

Young's experiment is performed using two laser light sources of different wavelengths. It is known that in both cases the distances to the screen and the distance between the two sources do not change.
If the longest wavelength is 550nm, what was the other wavelength used?

[thorny gyro]

Thank you @thorny gyro !

[thorny gyro]

U re welcome 😊

[paper roost]

Do you know what the final answer should be?

I am getting close to 400 nm

[thick verge]

Yes! I think it should be close to that. Can you show me how you did it?

[paper roost]

Just a min

The picture isnt loading. Should i explain?

[thick verge]

Oh, can u send it to me on the DM?

[steady parrot]

May someone help me with part b please?

[thorny gyro]

convert methane to methyl alcohol.

[thorny gyro]

I need help with this

[old lagoon]

first write down which of them are parallel and then find replacement resistors

1/Rres = 1/R1 + 1/R2 + ... + 1/Rn

[paper roost]

Its given that it is infinite

[safe gate]

Hello!! Can someone please help me understand what happens to the light from the bulb under these conditions?

[covert beacon]

Can someone help me with this hw question plz?

at t1, a forwards exothermic reaction has reached equilibrium. The temperature is changed to t2 and Kc decreases. State and explain which temperature is higher

[cunning crescent]

Iiirc, if Kc<K, the reaction will go to the right, an exothermic reaction will give off heat, therefore t2<t1 to balance that . But I'm not entirely sure

[tender lagoon]

i do be needing a bit of help

@physics kids

nvm im stupid.

i just had to rearrange

[subtle birch]

yea basically like all the situations/cases for electrolysis

[quiet sorrel]

Hii i did it like this if you know the answer we can check it and then I’ll explain u fine?

[gritty geyser]

@tender lagoonhow did you do it?

I'm interested on the question, I've never seen a similar question before

[tender lagoon]

Yup

[gritty geyser]

How can you get the mass knowing only the orbit radius and the sun's speed?

[tender lagoon]

U just equate F = GMm/r^2 to mv^2/r

Hold on I'll write it out teehee was kinda fun to solve

[gritty geyser]

lol

no way that you can solve it using only UCM

[tender lagoon]

UCM?

[gritty geyser]

Uniform Circular Motion

[tender lagoon]

uniform circular motion?

[gritty geyser]

centripetal force?

[tender lagoon]

oh you also use the equation for the gravitational force between two masses

[gritty geyser]

I see

Thanks

[tender lagoon]

Mg is just the mass of the galaxy (within the sun's orbit)

[gritty geyser]

By rearranging centripetal force and gravitational force

[tender lagoon]

the force that each mass (the sun and galaxy) are equal so you can just use those equations, then cancel m(s) which is the mass being affected

yup

[gritty geyser]

amazing

[tender lagoon]

since the sun travels in circular motion

what year/grade are u in btw?

[gritty geyser]

I've graduated high school

last year

[tender lagoon]

oh so are you in uni now?

[gritty geyser]

I wish

[tender lagoon]

or just doing smth else

[gritty geyser]

I'm studying for entrance exams

[tender lagoon]

omg best of luck

[gritty geyser]

thx

[tender lagoon]

are u doing something physics/maths related

[gritty geyser]

Only if measuring aspect ratios and pixel densities count haha

Filmmaking

[tender lagoon]

oh HAHSFHA v different from what i had in mind but still equally as cool

[gritty geyser]

It requires mostly human sciences

[tender lagoon]

i seee

[gritty geyser]

For whatever reason, the highest weight for my course is language

That includes my native language, foreign languages, literature

and an essay

both are weight 3

math is weight 1

[tender lagoon]

oh? i didn't think that it was that important in filmmaking! that's interesting

[gritty geyser]

Yeah, me neither

It's crazy because even though the exam has only multiple-choice questions, the language questions are highly subjective and up to interpretation

Often they have 2-3 correct alternatives

The catch is that you have to mark the one the question is asking for

Thanks for the explanation, it'll be of great help

[tender lagoon]

oh wow it has high standards for language

im so glad that the unis i'm applying to don't require entrance exams but then again the top unis i really wanted to go to do 😔

wouldn't have minded if i could just go to them 😭

but the unis i have in mind aren't too bad of a choice

[gritty geyser]

Where are you from?

[tender lagoon]

nationality malaysian, but i study at a british school in the middle east

[gritty geyser]

cool

STEM is so different there

[tender lagoon]

middle east or britain??

[gritty geyser]

britain

[tender lagoon]

oh yea

[gritty geyser]

compared to what I learn here

[tender lagoon]

wait really

is it harder or easier

[gritty geyser]

Harder

[tender lagoon]

oh is it bc we learn different things or are our exams just harder in general

[gritty geyser]

That one questions would've cracked me

[tender lagoon]

they're all over our exams 😭

[gritty geyser]

Mostly because they approach the subjects in a different way

It's challenging, and I like it

[tender lagoon]

it's stimulating

[gritty geyser]

I just hope they give good enough material to you guys

No use in giving challenging questions if the material just says "look it up lul"

[tender lagoon]

there are still repetitive questions which is good, at least i won't completely fail

[tender lagoon]

the material is pretty easy to learn

or it might just be me

but the exams are a bit tough

because a few questions require out of the box thinking in order to secure you an A

[stable heron]

I have a question in regards to volume/density/mass which I am struggling to answer

"Which has more mass, 0.1 m3 of cork, or 0.1 m3 of styrofoam? Explain."

[thorny gyro]

Any physics olympiad aspirants here or someone who have cracked it?

Or any physics student?

[tender lagoon]

is the density constant?

[tender lagoon]

im a stinky physics student whaddup

[thorny gyro]

@tender lagoon hi actually I had some doubts regarding my olympiad prep which I wanted to clarify😅

[tender lagoon]

Is there a topic or question you need help with? If so we can work through it together : D

[thorny gyro]

Nope it's not that I just was confused in some ways like am I studying enough or not

[tender lagoon]

O do you know what topics are included in the Olympiad

[thorny gyro]

Yeah

[tender lagoon]

What are they if u don't mind?

[thorny gyro]

Mechanics optics waves and thermo electricity and magnetism modern physics realvistic mechanics and little bit higher math knowledge of multivariable calculus and all

@tender lagoon okay?

[tender lagoon]

That's hefty but I think I'm confident abt most of it

Just the calculus part? I'm not sure how advanced calculus in the Olympiad is gonna be

[thorny gyro]

@tender lagoon u r in university?

[tender lagoon]

Nope lmao

[thorny gyro]

@tender lagoon so u r also preparing for olympiad?

[tender lagoon]

Nope, just a high school student

I've heard of it but never bothered really getting into it

[thorny gyro]

Any idea of good problem books.... I have already solved irodov and krotov

[tender lagoon]

Oh hmm not really

[thorny gyro]

Ok any good theory ones?

[tender lagoon]

Just Feynman books :^) but it's mostly conceptual

[thorny gyro]

Or any books of ur country like here in India cengage and DC pandey are famous

@tender lagoon hmm yeah I never thought about them they will make a good read... But see I actually can't study only physics coz have to prepare for entrance exams too

Currently preparing for jee advanced

[tender lagoon]

You should take a look at A level physics past papers, they have some neat questions in em that are good for a bit of practice

[thorny gyro]

@tender lagoon where can I find them?

[tender lagoon]

https://www.physicsandmathstutor.com/past-papers/a-level-physics/

[thorny gyro]

Thanx

[tender lagoon]

I'm doing edexcel international which have out of the box typa questions

But personally they're not extremely hard

They're a bit tough but not super challenging though

[thorny gyro]

Yeah I checked them they aren't hard at all

Like irodov is much harder😅

[tender lagoon]

I should try them out

[thorny gyro]

I guess I need to see Chinese camp papers of physics olympiad

@tender lagoon you haven't solved irodov?

[tender lagoon]

nope

Haven't been introduced to them 😔

[thorny gyro]

Try its a good problem book

[tender lagoon]

I will o:

I'm bored of normal studies

[thorny gyro]

Then try olympiad prep

[tender lagoon]

Alrightt

Also you seem to be on a good track for prep

Trust me you'll do well! I'm afraid I can't be of much help but I believe you got it 🙂 best of luck!

[thorny gyro]

Hey Guys

I need help in a chemistry

Assignment like Im not asking to answer the questions

I am simply trying to understand how you do it, its general chem and we are learning

about enthalpy

@tender lagoon thanx that means a lot all the best to u too

@thorny gyro ya what's ur doubt?

So this problem here

O jst basically balance it

and then flipped the sign right? if I have to do the reaction in reverse?

Like I can do it and you check if thats okay?

@thorny gyro I guess u should read thermo again coz this problem which u r asking is too basic actually.

Okay

Yup see before solving physical chem u should have a thorough study of concepts..... Like if u would have asked Gibbs free energy and all that would have been a bit better

@thorny gyro got it?

yeah

[thorny gyro]

@tender lagoon thanx actually I was a bit worried coz entrance exams and olympiad are clashing and plus in entrance exam syllabus is also vast like it's complete advance level physics chemistry and maths 😅so was confused that should I study for entrance exam or olympiad as competition in India is high u see only 5000 students get selected out of 1500000 applicants 😅and only top 65 are allowed to get Computer science in the countrys finest college IIT B and I too want to pursue CS as a career in our countries best college IIT B and for that I need to come in the top 65 out 1500000 applicants but I also wanted to give olympiad so was confused which to prirotise😅😅😅😅😅😅

And yeah thanx for ur help means a lot😃😃😃😃😃😃@tender lagoon

[stable heron]

Sorry for the late response I was at the park but yeah it is

[tender lagoon]

Then the mass is the same right?

[tender lagoon]

Aww I'm glad i was able to help

[tender lagoon]

Yea don't prioritize both at the same time, they seem pretty hard to get good practice for

Think about the long term and which one will benefit you most for your future ^^;; of course with a bit of research first

You got this~

[stable heron]

Oh thats a thing? I was starting to think deep saying if those two items are made from different element they must also be of different mass

But you’re right thank you very much

[safe gate]

thank youuu!

i do kind of get it now

[stable heron]

Got another question if you dont mind

A fishtank measures 0.5 m long, 0.3 m high, and 0.25 m deep.
a) Find the volume of the tank.
b) Find the mass of water it will take to fill the tank.

I found the volume, and its 0.0375 m3

[chilly idol]

KOD

[stable heron]

Now Im just wondering how I can use that information to find the mass

[stable heron]

Yktv lmao

[wide flicker]

im probably just dumb rn but

im not sure what to do here

the way i see it every answer i get in meters per second will be under 1

[tender lagoon]

The density would probably take that into account

[tender lagoon]

The density of water is 997 kgm^-3 so the mass is 997 * 0 0375

[tender lagoon]

What's the question?

[wide flicker]

What is the average approximate speed of animal A

[tender lagoon]

What the hell

That animal is moving mad slow

There's no way it's more than 1 m/s

Are u sure it's not an error

[wide flicker]

that seems to be the only possible case

[tender lagoon]

It's literally moving a meter per minute

[thorny gyro]

Hey guys!can someone help me with this Q?it says what is the most and least atomic number for this shape?

[thorny gyro]

Omg i got it btw

[thorny gyro]

can anyone explain moss, fern, gymnosperm, and angiosperm reproduction cycles?

[tepid summit]

can i get help on what the luminosity of a star is

is it the brightness or the size of the star

i search it up and im getting mixed results

[tender lagoon]

it's just the power output of the star

[tepid summit]

like in what measurement?

lumens?

[tender lagoon]

nope just watts

[tepid summit]

oh alr

[stiff veldt]

Hi! I was wondering if someone could help me with this chem question please. "why do isomers compounds have different boiling points?"

[cunning crescent]

Isomers are compounds with the same molecular formula, but not the same structure, and have different chemical properties, therefore they can have different billing points

So they could f.ex have different amount of covalent, ionic and hydrogen bonds

[stiff veldt]

Thank you. Also does the surface area also have an effect on the boiling point?

[cunning crescent]

A bigger contact area will increase the boiling point so I think so yes

[tender lagoon]

I don't do Chem I do physics but doesn't boiling point solely depend on the substance

[tawny ivy]

Doesn't boiling point depend on VDW forces?

The amount of electrons there are?

Oh nvm

[cunning crescent]

Not really, mixtures will have different boiling points than pure compounds f.ex.
but I think what she asked was surface area of the molecule having an effect

[tawny ivy]

The original question

I hate organic ;p

[tender lagoon]

I was thinking that surface area would only have an effect on the rate of vaporisation

[tawny ivy]

@stiff veldt

[tender lagoon]

I'm probably wrong nvm ignore me

[tawny ivy]

A quick google search should do it

The more branched out the chain of the isomer the weaker the VDW forces

Therefore lower boiling points

The closer the branches are, the stronger the VDW forces

As VDW forces only work in short range

[cunning crescent]

Oh surface area of the liquid doesn't change boiling point lol, you're right about that. I probably just misunderstood the question

[tawny ivy]

Also VDW = van der waals forces

Or london forces

or weak intermolecular

[tender lagoon]

Oh it's ok haha

[stiff veldt]

Thank you! @tawny ivy @cunning crescent @tender lagoon

[tawny ivy]

Npp

[tender lagoon]

Npp

[tawny ivy]

heyyyyy you copied meee

[tender lagoon]

Damn that's soulmate shit right there 😳

[tawny ivy]

🤣

[remote sinew]

good mornig to everyone from brazil

anobody here know physics well?

[tawny ivy]

Nopeee

Depends

[tender lagoon]

How well

U can ask me

[remote sinew]

all right

i will send the question

[tender lagoon]

Okiee

[tepid summit]

can someone answer my question too

meht

meth

[tawny ivy]

ketamine

Is that how you spell it?

What about it?

[remote sinew]

the question says: the particle A and the particle B move on the same way, the graph shows how the velocity varies on the time

[tender lagoon]

what is the question good sir

[tender lagoon]

oh ok

[tepid summit]

i am know khemist

[tawny ivy]

ay no shitposting please

[remote sinew]

the question is wright in portuguese hahahaha, im translating to english

[tepid summit]

shit sorry

[tender lagoon]

ohh its ok i'll be here

[tawny ivy]

Thank youu

[remote sinew]

continue...

he wanna know what time they will met each other (i dont know if i express myself right)

[tender lagoon]

oh ok i get it

[tawny ivy]

2

2 seconds

[verbal flax]

4sec

[tawny ivy]

They intersect there

[remote sinew]

and the biggest distance between they since the moment when the observation begun untill they met again

[tender lagoon]

omfg i'm so blind

i didn't read that they're traveling on the same line

[remote sinew]

i need to know how to do the maths kkkk

[tender lagoon]

for this one you need to use one of the kinematic equations

[tawny ivy]

Would it be 2 seconds?

Because both of them are intersecting

[tender lagoon]

at 2 seconds they have the same velocity

but that doesn't mean they meet each other ?

[tawny ivy]

Oh sht

[remote sinew]

yeah

[verbal flax]

B is travelling with constant velocity 4 m/s so distance travelled by it in t seconds will be 4*t

[tender lagoon]

wait of course they are

[verbal flax]

and by A it will be 1/2acceleration(t^2) as its initial velocity is 0(from newton 2 law

[remote sinew]

here i had a bug brain and i spell totally wrong the word "write"

[verbal flax]

acceleration could be found out by slope of line of A

[remote sinew]

okay

[verbal flax]

equate both the equations to get t (by equating equations u are equating both of theirs distance which is the question)

i hope u are familiar with newtons laws?

of motion in straight line

[remote sinew]

i kown them, but the last time since i saw them was 8 years ago, on the school. hahahah. The exercise is about uniformly varied movement, and varied movement

but i understood the explanation

thanks

[willow gale]

helloo

can anyone help w physics plss:)

[rare spear]

torque = forcedistance, so 55=134distance

distance = 55/134

[willow gale]

ok tysm

❤️

[forest pagoda]

teddy

@viral rivet

[livid birch]

someone can help me ?

[remote crystal]

Does anyone know what are the monomers of proteins and through which link they bind? My teacher surprises me 2 weeks ahead of the test and I didn't get to study : (

[cunning crescent]

is there anyone who's familiar with thermodynamics/materials science who also knows swedish? need some help understanding a solution to a problem I have, they gave the solution in swedish with poor picture quality so I can't fully make out all the words🥲

[thorny gyro]

Anyone here has a challenging physics problems or something?

@tender lagoon hmm u r right I should focus more on university exams

@cunning crescent post the problem btw I don't know swedish

But can try explaining in english

[cunning crescent]

ok, what I struggle with is the Gibbs phase rule, and what they mean by phases and components

ill translate the problem one sec

A graphite crucible is placed in an inert and vacuum sealed container. The containers atmostphere consists of CO2(g) and CO(g) and the temperature is 987.5 K.

a) specify the minimum number of independent components needed to reproduce the system

b) how many degrees of freedom does the system have?

[thorny gyro]

Ok sending answer

@cunning crescent i guess it just formula basedd

Gibs phase rule is just to help determine number in multicomponent system

@cunning crescent F= 2+s-r-p 😅that's sit

What u aren't able to understand in that😅

[cunning crescent]

what is the s, r and p, how do u find those

[thorny gyro]

😅😅😅😅😅😅😅hmmm then I guess u haven't understood Gibbs phase rule completely 😅

S is number of different speciies p phases r independent relations

That's all

It's just a high school question I guess

[cunning crescent]

yeah it's introduction course, what I don't really understand is what the solution is going on about, so i'm not sure if I've understood what they mean by species and independent relations. I've got the right answer, but I've done it differently from the solution

[thorny gyro]

U applied summation approach I guess then@cunning crescent

@cunning crescent see I know how to solve the problem but still I am a high school student only so maybei my solution will not be precise as yours

@cunning crescent u an undergrad?

[cunning crescent]

Yes, I'm taking an introductory course in Thermodynamics in uni

[cunning crescent]

could you show me the steps you take? Like where you take the values for s, r and p from?

[thorny gyro]

Hmm i get it I am in +1 actually in India (11th class)

[cunning crescent]

The formula we have learned is F = C - P +2, where C = independent components, and P = phases. but I assume the formula you use adds up to the same, just with different letters

[thorny gyro]

@cunning crescent i could tell but u may not get it as I have applied a lot of tricks in it coz here in India we cannot put much efforts in these questions more like coz we r gonna face much tougher question in entrance exam

@cunning crescent both are the same things

C= s-r

That's sit nothing else same approach

@cunning crescent i just don't get what's the problem u are facing in the question? Like what u couldnt understand?

[cunning crescent]

honestly I just don't get what the solution is doing, it's making me insecure that I've understood the parameters of the equation. I took C as nr of elements, whereas they in the solution set up reactions to find s-r (I don't quite understand what r is? what does independent relation mean)

[thorny gyro]

@cunning crescent hmm r is what u need thermal mechanical transfer equiblirium

It's among intensive variables

[cunning crescent]

here is the solution they've given, the text is swedish but i dont understand it either

[thorny gyro]

My approach is just see that there are 4species and two phases right

By species approach we can get s= 4 r= 2 P = 2

Right?

@cunning crescent is this much clear?

Now just by the eqn u can find f

[cunning crescent]

what's the 4th species?

the solution says 3 species, r=1, and therefore c=2

Finding F is not a problem, it's C I struggle with😅

[quiet sorrel]

ohh okk happy for uu 🥰🥰

[thorny gyro]

@cunning crescent oh ya sorry my mistake ifs 3

[cunning crescent]

me I said, independent components is C and O, meaning c=2, 2 phases but T being constant giving f=1. But the first statement i'm not sure if is sound, or just a coincidence that it's given the right answers on the exercises I've done so far

[thorny gyro]

Yeah @cunning crescent it's correct I guess

@cunning crescent oh yeah just realised I actually mixed up mine thermo question with yours.... So that's why did a mistake but yeah C=2 r=1

@cunning crescent wait a sec u getting f= 1?

[cunning crescent]

yes, solution also states f=1

[thorny gyro]

Hmm then it's right

Coz f actually is 1

[cunning crescent]

there's 2 phases, but we also know the temperature, thus removing 1 dof

[thorny gyro]

Yeah it's 100 percent correct

@cunning crescent why didn't u considered solid carbon?

[cunning crescent]

What do you mean.

[thorny gyro]

Graphite @@cunning crescent

@cunning crescent I guess u should check once agaiin

@cunning crescent coz I am damn sure F= 2

Coz species are 4

Yeah mine is correct✔ let me check once

@Eva see same given here

@Eva see same given here

[cunning crescent]

ah, the difference here is that in my problem, the container does not contain O2 🙂

it is a vacuum sealed container, with only C, CO and CO2

[thorny gyro]

Oh yeah missed the point it doesn't contain o2 damn that's why I was confused li why I am getting wrong answer

@cunning crescent sorry my mistake I guess😭😭😭😭😭😭😭😭😭😭😭😭😭

[cunning crescent]

haha no worries 🙂

also I think I understand r now too 🙂

[thorny gyro]

Like when u told answer to be 1 I was like how I could get wrong answer so finally checked on net too then I got damn sure too so I said

@cunning crescent sorry I guess I didn't helped much

@cunning crescent even I have one puzzling thermo question should I share?

[cunning crescent]

go for it, maybe I can help, maybe i can't 😛

[thorny gyro]

Ok

35and 36

@cunning crescent this is the question I was talking about

@cunning crescent u have any idea regarding this?

[cunning crescent]

what are they asking for in the first question?

the second one I am not confident enough to be any help in I think 😅 I could try to solve it, but your guess is probably as good as mine

[thorny gyro]

They are asking resonance energy

@cunning crescent no worries even if u couldn't solve I will ask my teacher then...... BTW u in which university?

[cunning crescent]

asking your teacher is probably the best, that way you're sure to get it right☺️ I'm in a Norwegian university, idk if they mean anything to you 😅

[thorny gyro]

@cunning crescent nah not like that that's gr8 infact I m just a high school student excited for college but still have to wait 2 yrs😭😭😭😭😭😭😭😭😭

[cunning crescent]

hahah well you'll get there eventually, enjoy the time you have with your friends in high school if you can in the meantime☺️

[thorny gyro]

@cunning crescent I just asked that coz I am preparing for physics Olympiad and chem olympiad that's why like the question u asked was not a complete high school one but bit introductory of uni.... But I have just moved to 11th so wanna knew some good books for chem as I am preparing for so coz the the only reason I was able to solve that question coz I have studied uni level courses in 10th a bit

[cunning crescent]

ooh that's dope, good luck on the olympiad!

the thermo book I've got is not very good so I don't have any recommendations there😆

[thorny gyro]

@cunning crescent it's pandemic going on in India.... We only have to study nothing more and nothing less afterall in order to get in the best college here u need to give an exam called jee mains and advanced..... In which 1500000 people give and only 5000 are selected an out of it out which only top 65 get admission in the countrys finest college IIT B to pursue Computer science 😅😅😅😅😅😅😅😅😅😅and my aim is the same to pursue CS in IIT B😅😅😅😅😅

[cunning crescent]

ooh snap, that's rough. We also have the pandemic closing down schools and stuff, but hopefully things get better soon. Good luck, I hope you'll get into the uni you want!

[thorny gyro]

@cunning crescent any tips for chem?

Mine inorganic is a bit weak

@cunning crescent asking u after all u r a uni... Student so u may be knowing how to study inorganic in a more effective way

[cunning crescent]

The book I used was oxfords 7th ed Inorganic chemistry, it was pretty good

[thorny gyro]

Hmm JD Lee?

[cunning crescent]

by Weller, OVerton Rourke and Armstrong

[thorny gyro]

Or is it solomons??

@cunning crescent ok will try that then thanx for ur help ... It was nice talking to u btw all the best for ur future

[cunning crescent]

thank you, you too! ^^

[tepid locust]

Calculate the volume of 0.1M HCl and water required to make a 10 mL of a 10% HCl solution (v/v).

anyone know how to do this

[somber trellis]

somebody tell me what is electrostatic energy?

[radiant tartan]

anyone know about circuits that could help me, please?

[frigid blade]

preventing degradation by nucleases

[sterile flare]

ik a good amount about circuits if u need any help

[radiant tartan]

Yes please

[sterile flare]

what do you need help with?

my major is literally electrical engineering

and computer science

[radiant tartan]

oh its just some hs physics, i'll show u the problems

[sterile flare]

oh cool

[radiant tartan]

thats awesome

[sterile flare]

well, its finna be

[sterile flare]

alright, what do u need help with in it?

[radiant tartan]

well i want to know if I got the correct values

specially for d and h

[sterile flare]

alright, for the equivalent total resistence ?

[radiant tartan]

30

[sterile flare]

for resistors in series, u just add up them all, example: r1 + r2 + ......rn = Rtotal

so yeah, 30 ohms is right

ok and for h,

power = voltage squared divided by resistance

so find the voltage before the resistor, and divide it by its resistance in ohms

[radiant tartan]

um i got 45w; 90w;135w

[sterile flare]

the first one doesnt look right

because the initial voltage of the circuit is 10v, and the resistance is 5 ohms, so 10 squared is 100, and 100 divided by 5 is 20, so the power consumption for the first resistor, R1, should be 20W.

[radiant tartan]

wait how is the initial voltage 10v?

[sterile flare]

oh lol sorry so much

read the voltage of the battery wrong

[radiant tartan]

haha its cool

[sterile flare]

woah that cant be right on my side

1620Watts

yeah...

way too much

[radiant tartan]

what i did was multiply I * V to get the overall Power so 270W ... idk if thats right

[sterile flare]

is that ohm's law?

youre using it wrong

its v=ir

power is different than resistance

[radiant tartan]

yea i figured lol

[sterile flare]

current time voltage would give u something weird

p=v^2/r

thats the power equation

and ohm's law is v=ir

[radiant tartan]

oh got it, thanks

[sterile flare]

so you attempted to calculate resistance, but in the wrong order

and resistance is different from power consumption

[radiant tartan]

so individually would each resister add up to the overall power?

[sterile flare]

lemme check

the total voltage is 90v, total resistance is 30 ohms, and the total current is 3 amps. calculate the total power, 90 squared is 8100, divide that by 30 ohms, you get 270W

so you got it right

nice

its funny because I'm learning the circuits of computer processor architecture and really advanced stuff and how it works and how to build it, resistor circuits lesson 1 has faded a little 🤣

[radiant tartan]

ahahah

too advanced for this lol

[sterile flare]

its like when u do so much calculus u forget slightly how to add two numbers lol

[radiant tartan]

is it ok if I give u the values I got and u let me know if its correct?

[radiant tartan]

lol can't relate

[sterile flare]

ofc man

what grade are u in

[radiant tartan]

im a junior

last two weeks tho

wanna make sure I keep them grades up w the upcoming finals

[sterile flare]

yeah so I'm 16, but i graduated high school half a year ago and im a huge nerd

do you want the voltage drops for each resistor?

[radiant tartan]

ok so equivalent resistance 30 ohms
overall current 3A
individual current 18A; 9A;6A
individual voltage 15V;30V;45V
overall power 270W
individual power 45W;90W;135W

im a little skeptical about the individual currents but idk

[radiant tartan]

damn thats crazy

[radiant tartan]

thats so cool

[sterile flare]

ok so u got all that right, except for the currents

so, unless it is over like, fricking telephone poles strecthing miles over miles, there is no current drop. Current stays almost exactly the same.

So it should be like 3A across the entire circuit basically

for each resistor

[radiant tartan]

really?

would it change if it was a parallel circuit?

[sterile flare]

The amount of current in a series circuit is the same as through any component of the circuit. Thats because there's only one path for the current to flow in a resistor-series circuit. Since i = q/t (current is electric charge over time), resistors basically change the time, but the time difference is normally so so small, that it barily makes a difference unless its over a very long course, like telephone poles, as i said.

[radiant tartan]

oh alright makes sense

[sterile flare]

BUT, if its for a parallel circuit, there are more than one path for the current to take, and it will change for each resistor.

So it depends on the circuit, there was no diagram, so i just imagined a series one.

[radiant tartan]

i dont mean to abuse of ur generosity but I really want and need to understand this concept, could u help me w a few more problems?

[radiant tartan]

yes it was a series

[sterile flare]

im actually very busy rn

but, you can dm me, and we can continue this later?

[radiant tartan]

alright thanks

[sterile flare]

any time

[pulsar dragon]

I still cant understand that

I need more.....
Data to solve and understand

[wide knot]

try to redraw so you can see it easily

[lean void]

@wide knot hey I did redraw it but it looks more complicated than before 😫

[shell drum]

This is how it looks when it’s redrawn

@lean void I have given one point in addition to A and B so that it would be easy to understand. Have numbered every capacitor and check the terminals of each. First three have their terminals connected to A and C , and the last three, to C and B . Hope this helps

[lean void]

Thanks buddy

[shell drum]

🤘

[cedar swan]

How do I calculate R? The answer is 30ohm.

[shell drum]

There you go @cedar swan

[pastel steeple]

ok i know this isnt sciency related

but cyrus the legend

omg

is that ur handwriting

online??!

how!?!?

[shell drum]

lmao, that's how the first page of all my books/answer sheets look like. Towards the end, the script would switch from English to hieroglyphics 🥲

[pastel steeple]

that is soooo cool

do you have one of those writing pads

like the one with pen

[shell drum]

Oh yeah , I used goodnotes 5 in my iPad Air and an apple pencil 2 .

[pastel steeple]

ahhh i always wanted one of those it looks so cool. i know a person who uses the pen and does digital art its the most beautiful things ive ever seen

[shell drum]

It was kinda tricky at first, but I think I'm starting to get used to using it

[shell drum]

Oh yes, My brother does that in my device when he comes over. Also my tattoo artist makes his designs in an ipad. Really helpful. I can't draw for shit 🥲 😅

[pastel steeple]

mm drawings hard

my drawings looks like a 2 year old with crayons

[shell drum]

You're not alone. Also, let's not spam here . People might find it annoying. See you around. And thanks for the compliment 😅

[pastel steeple]

yes agreed see you around. most welcome :)

[thorny gyro]

Hey! I am excited about an “issue” related to inorganic chemistry. Its a question of the equation Zn + Cl2

• ZnCl2 .. somewhere they give it that the reaction proceeds without balance, and elsewhere they give it - 2Zn + Cl2 -2ZnCl2 .. how do you think it is more correct? Thanks!

[cunning crescent]

are you sure they give it as 2Zn + Cl2 -> 2ZnCl2? That reaction makes little sense, as it is not balanced and not necessary to add nrs, when Zn + Cl2 -> ZnCl2 is already balanced. The 1st is definitely more correct

[thorny gyro]

Yea, here’s an example

[cunning crescent]

ahh I see, that one is 2Zn + Cl2 -> 2 ZnCl, which is also a balanced but totally different equation 🙂

[thorny gyro]

So both 2Zn + Cl2 -> 2ZnCl and Zn + Cl2 -> ZnCl2, are correct?

[tulip estuary]

CHEMISTRY QUESTION:

Can someone explain to me on discord DMs basics of balancing equations and the working Sulfur VI Oxide = SO3?

[cunning crescent]

Yes, at least in terms of balance

[cunning basin]

is anyone giving the NEET exam

[heavy plover]

hello ! i needed help with my exam !

please

[digital frigate]

. The count rate of a radioactive source at
𝑡𝑡 = 0 was 1600 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐/𝑠𝑠 and at 𝑡𝑡 = 8 𝑠𝑠, it
was 100 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐/𝑠𝑠. The count rate (in counts)
at 𝑡𝑡 = 6 𝑠𝑠 was

any explanation plz

[verbal flax]

the minus sign in dN/dt is because the number count is decreasing due to radioactive degradation

[digital frigate]

did you just copied it from doughnut like something

[verbal flax]

no i didn't . if you want i can explain more clearly if you want

[cyan prairie]

Plz hlp me in 49 n 50!!

[verbal flax]

the concentration under chemical equations are equilibrium conditions

in 50th u can similarly find concentration of H+ and then find concentration of OH-

[cyan prairie]

thnx a bunch!

[somber trellis]

anyone online?

[frosty cedar]

Hi,can someone help me with understanding the force of friction in physics?I'm trying to understand it for a while.

[uneven onyx]

What specific question about force of friction do you have?

[full rune]

anyone can proof that there is presence of multi dimension.

[silk sparrow]

how to determine the cstr whether operating ideally or non-ideally?

[frosty cedar]

What are kinetic friction and static friction?

[frosty cedar]

And can you explain how does formula of friction work please?

[shell drum]

Friction associated with a body in motion is kinetic friction and friction associated with a body at rest is static friction

[pulsar dragon]

I cant deny that there is any more dimension but i cant proof if there exist

[thorny gyro]

Please help with these questions:

1. Which muscles do nerves control? I guess the answer is that they control all the muscles?
2. Which muscles does ganglion control?

[frosty cedar]

Thank you pal <33
But I need more of than this to understand it truly.Guess I'm going to search and think of it myself.
Thank you again !

[small badge]

Hey guys! I needed some confirmation on the answer for this circuit sum here. The question is “find the current through the 20V cell.”

[shell drum]

That would be better. Do try to find youtube videos. I'm sure there are plenty with really good explanations

[somber trellis]

anyone online?

[thorny gyro]

does anyone have any idea about mole concept

[thorny gyro]

what about it

[cunning crescent]

n(Na+) = 2n(SO42-)

m(Na2SO4) = n(Na2SO4) * Mm (Na2SO4) = n(SO42-)*Mm(Na2SO4)

idk what formula units mean but that's the methods for i) and iii) @thorny gyro

[thorny gyro]

thank you so much i owe you

[cunning crescent]

np

[weary quest]

Hello can anyone help me with gizmo stem case of cellular respiration

Please

And thank u!

[stone pecan]

Yea I get the same result, -5.6A

[uneven onyx]

I think Khan Academy will help in addition to the explanation from @shell drum , examples are always easier to absorb information:
https://www.khanacademy.org/science/high-school-physics/two-dimensional-motion-2/friction/v/static-and-kinetic-friction-example

[frosty cedar]

Wowie,thanks man 👍

How did i forget my favourite guy,Sal Khan?

[uneven onyx]

He's great 💯

[frosty cedar]

Definitely!!

[waxen canyon]

There is a photo below, where you can see dividing cells near the tip of an onion root under
the light microscope, identify a cell in each of the following stages by circling: Metaphase,
Anaphase, and Cytokinesis.

[frigid blade]

This is soooooooo cool! Thanks for uploading 😄

[thorny gyro]

Wow!!!!this is amazing!!!!!!🤩

[stoic dew]

hi i have a quick question about this. which nitrogen is the most basic?

i already know A is the most basic since B and C are part of a ring but which is more basic between B and C?

could B be more basic because it has no hydrogen and therefore no hydrogen bonding?

[pale bison]

You need help?

[small badge]

Thanks! @stone pecan

[tiny monolith]

hi dumb question but does it matter whether i use the initial or final mass when calculating the enthalpy change

i know it's a marginal difference but i need to show my work and i completely forgot i have different masses

ooh or do i do difference

nvm!!

[thorny gyro]

Is the answer d

[kind verge]

has anyone who's taken the ap physics 1 exam give any general tips :( mine's in about 2 days

[twilit rampart]

PHYSICS DOUBT - a)So i have a charged solid sphere enclosed in a charged conducting shell. If i earthed the shell, then will the total charge on the system remain constant or will it change.. due to change in potential?

b) Now I also earthed the charged sphere. Will the total charge of the system remain constant? What about the potential difference? What will happen to the charge on the charged conducting sphere?

[paper roost]

C? As after gaining a positive charge it can be in resonance with the two double bonds..

[grizzled lagoon]

can someone pls explain why the answer here is C

[stoic dew]

doesn't the resonance increase stability which increases acidity?

[paper roost]

The stability of conjugate acid means more basicity of the base.. we are talking about the conjugate acid’s stability

[grizzled lagoon]

5th pls

[coral tulip]

I am a commerce student

[thorny gyro]

https://youtu.be/PZIoFD_Z73M

[weary quest]

Hey can anyone help me with gizmo stem case for cellular respiration??

Please let me know, thanks

[pale bison]

try on #medic-help too

[weary quest]

Okie

[pale bison]

what is that? From google I don't understand

[weary quest]

Oh it’s basically a website where we have to do investigations and just answer questions related to the person that we are investigating on for example in this one there’s a man who was poisoned and has lack of breathing problems going on, and we need to answer few questions so I will need help with the questions answering first I’ll tell u the answer and u can help me telling a bit more in deep, please and thank you!

[pale bison]

ah okay so in medic help can help you more

[cedar swan]

Hi, can somebody help me? Which one of these carries the most energy? Please sort them by order: Ultraviolet light, green light, heat radiation, microwaves, radiowaves, gamma rays

[pale bison]

@cedar swan

[cedar swan]

Green light would then be visible light?

[pale bison]

yes ^^

[cedar swan]

Thank you

[pulsar dragon]

Sheeeeshyou got a nice one there

[late vigil]

I need help with organic reaction mech, can someone pls help me?

PLEASE

[radiant steppe]

anyone taking the mcat here

[long juniper]

anyone know some sources of errors that can occur in a buffer lab?

[hybrid linden]

Concept: Energy is inversely proportional to the wavelength of the wave.

[hybrid linden]

Which reaction?

[late vigil]

Sn reactions, Eliminations, ArSN

[shrewd musk]

guys how do i carry out the conversion of But-1-ene to 1-iodobutane, i mean like what type of reagents do we use here...??

[shrewd musk]

for SN u just use water as polar protic solvent, since SN is devided into SN1 and SN2, and in SN1 , the nucleophile attacks the RX thus kicking the X [halogen] out, and making retention and inversion product with it [ this process is called ''racimization'' in which there is 50 percent retention and 50 percent inversion] while in SN2, there is no water,,,or polar protic solvent, to shift the equlibrium forward, thats why the SN2 is slower as it doesnt include water in it, and it is, in other words ;;non-polar aprotic solvent, in this its much slower, and ONLY INVERSION HAPPENS NO RETENTION, THIS TYPE OF INVERSION IN WHICH THERE IS NO RECIMIZATION IS CALLED ''WALDEN INVERSION''

SN- Nucleophilic substitution which i already assume u know but just in case

[tired silo]

then convert the butanol to iodobutane

[shrewd musk]

thank youu!! 😇

[unborn oracle]

Eyo can someone help me with Q3d? Ping me if you do and thks!!

[late vigil]

@unborn oracle for a) apply formula pe= mgh

B) use conservation of mechanical energy

Everything after that you can do with the results obtained from these both laws

[unborn oracle]

Yeah I get what you mean, but I still can’t do part d for some reason 😓😓

[shell drum]

You just need help with 3d ?

[shell drum]

According to the law of conservation of energy, The total energy remains constant .
If we consider the moment just after rebound,
Kinetic energy is max and potential energy is zero.
And at height = 1.25 m , PE is max and KE is zero.

Total energy is same throughout , ie, sum of PE and KE is same.

T.E at max height = T.E right after rebound
PE max + KE ( = 0 ) = KE max + PE ( = 0 )
mgh + 0 = K.E max
KE max (as the ball leaves the plate on rebound) = 0.1 kg * 10 ms^-2 * 1.25 m
= 1.25 kgm^2s^-2 = 1.25 joule

[shell drum]

Velocity of rebound can be found out by the same method.

KEmax = (1/2) mv^2

V = √ (2KEmax/m ) = √ (2*1.25/0.1) = √25 = 5m/s

[shell drum]

@unborn oracle read and see if this makes sense. Feel free to ask if you still have doubts . Also , if anyone spots any mistakes, do correct them kindly

[unborn oracle]

Ah alright thank you so so much!!

I’ll look into it later I’m having dinner rn 😂

[hybrid hinge]

Can someone explain the graph for black body emmsion spectrum?

[hybrid linden]

The blackbody spectrum is the distribution of the blackbody's observed electromagnetic radiation as a function of its wavelength.
Now ,the wien's law states that maximum wavelength*Temperature= constant.
Therefore, as temperature increases maximum wavelength corresponding to that temperature decreases.

[hybrid hinge]

Got it! Thanks a lot

[glad heart]

Somebody plz explain this to me

[proud kettle]

Ap chem voltaic and electrolytic cell question

Pls help

[hybrid linden]

Refer electrochemical series and see who oxidises the other.

[proud kettle]

Right with the potential chart pb is reduced and zn is oxidized

But I’m not sure what that means exactly for whether or not a change is over her

[thorny gyro]

A river 1 km wide is flowing at 3 km/h . A swimmer whose velocity in still water is 4 km/h can swim only for 15 minutes.In what direction should he strike out in order reach the other bank ? What is the total distance covered ?

can someone solve this numerical

[shrewd musk]

hi! how do we memorize the organic chemistry reactions and reaction mechanisms...as even though i learn, i cant seem to connect the mechanisms to solve the questions, pls guide anyone..🥲 😿

[pastel steeple]

ahdhsjk

help plesss

[hybrid linden]

Electrode potential of (ni2+/ni) is -0.257
Electrode potential of (pb2+/pb) is -0.126
Electrode potential of (zn2+/zn) is -0.7
So, here since zinc has a more negative electrode value than nickel,and it has more tendency to get oxidised, it will displace the nickel from the compound. Whereas lead has less negative electrode potential value than nickel so it wont displace.

[hybrid linden]

One through air and one through the steel

[thorny gyro]

Can anyone help me on my gas laws assignment? Ps: need to know dimensional analysis, significant figures like for example 1x10^3 typa thing.

[thorny gyro]

Dm me btw when you can

[tender lagoon]

Sound reflecting?

[shell drum]

The sound produced travels through air and the material used to make railway line as well. He hears it as two sounds separated by a short interval because the speed of sound in air and the material of rail are different.

[tender lagoon]

Oh ur right sorry I just woke up

[shell drum]

well...... Good morning😅

[tender lagoon]

Morning :^ D

[thorny gyro]

A ball is dropped from top of tower 300 m high.After 1 sec another ball is dropped with 20m/sec from top of tower. Where and when they meet?

[pastel steeple]

thankss

[velvet flower]

Hey, I'm stuck with this question.

If we add 150.0 ml of Ca(OH)2 to 100.0 ml of HCl with a concentration of 0.200 mol/liters (the HCl)... And at the end the ph=11.2.. Then how many moles of Ca(OH)2 were there to begin with

[inland pumice]

you have pH = -log[H3O+] so maybe you could determine [H3O+] then [OH-] with Ke=10^-14

then with OH- you determine Ca(OH)2

[velvet flower]

thanks!

[inland pumice]

no problem 😉

[cunning crescent]

I think the best thing for me at least is to just do a lot of practice exercises to sort of get the feel for it, that way you're more experienced with them and more likely to recognise when a reaction is possible

[lone juniper]

Bruhh can someone welpp?

[hybrid linden]

4003.364 N/C?

[lone juniper]

O it’s answer is 250 N/c

I can’t seem to get the dimensions there right

[hybrid linden]

Ya I got it my bad..

You still need help?

[lone juniper]

Yesss I do 😭

[hybrid linden]

Okayy

I'll send it

[lone juniper]

Thanks 😭🙌

[hybrid linden]

I hope it helps.✌️

[lone juniper]

Thank youuuu sm !! U made it much easier than what I was expecting!

[lone juniper]

Also jus a sec I feel like I might be rushing through this but from where did that 4 pi came in the fourth line

[hybrid linden]

I multiplied and divided by 4π so that in the denominator I get 4π epsilon and 1/4πepsilon is 9*10^9 so yeah just for clarity and simplification

[lone juniper]

Ah ahhha ahhhhhhhhh ooo okayy now I finally got this whole thing

[lone juniper]

Thanku sm I was stuck on this for like 30 minutes😭

[hybrid linden]

Areey welcome😄

[thorny gyro]

Can anyone help me on my gas laws assignment? Ps: need to know dimensional analysis, significant figures like for example 1x10^3 typa thing.

Dm me if you can help please

[ocean carbon]

can anyone explain how this net ionic equation was derived

[cunning crescent]

the H+ is actually H3O+

NH2OH is a base, and accepts the H+ from the H3O+, giving NH3OH+ and a watermolecule

[cedar swan]

How much energy does a foton with the a freqency of 450nm contain?

I just wan't to know hot so get the answer

[zealous crag]

Help

When magnetic force is about k then that means it's moving in a circle in x-y plane with r=mv/(qb) right?

[zealous crag]

Here is what I tried.

The order of the pages is wrong

[fast frigate]

Can someone explain how to do [1] and [3] for this Physics task and if I did [2] right? Literally spent the entire day on this and another task and still feel clueless and have no idea if what I've done so far is even somewhat right 😢

Tried translating it to English:
Two gases (nitrogen and hydrogen) are placed in the piston cylinder. Starting temperature 100◦C;
pressure 3atm .; volume 30L; the total mass of the mixture is 1.5 kg and the mass of nitrogen is 1 kg. Cylinder
isobaric heating to t = 450◦C.
[1] Draw state diagrams pV and pT and VT
coordinates (for both gases).
[2] find the molar mass of the gas mixture.
[3] determine the most probable gas
speed ratio at the end of heating

This is what I have so far:

[zealous crag]

Does the gases react to form NH3?

[fast frigate]

yeah they mix together

[zealous crag]

Then won't we have to check limiting reagent?

Find NH3 formed and then proceed?

I haven't done gas laws in a while tbh

[fast frigate]

when the task says that is a mixture can that also mean that they don't form NH3?

im nott sure now xd

[zealous crag]

Yeah me too

Generally they mention if they react or not

Now I am scared about not remembering stuff from gas laws

[fast frigate]

I feel so hopeless at physics, not sure what mindset people have that are successful at it. Seems like its just a rabbit hole of needing a formula then needing another one because you dont have the variables then anotehr one and so on and its just one big mess

[zealous crag]

Not if you have clarity

I just sit and think about a question most of the times for physics

Come up with a genral plan

Then pick up the pen

[fast frigate]

what does the general plan look like? how do you know which formulas to use? cuz I just look for ones that have the variables and try to make it work not sure how else to approach it tbh

[zealous crag]

Idk it just comes most of the times

Don't just try to out one formula after another

Be clear about what you are trying to do

Think clearly

[fast frigate]

hmm, any idea on what are those diagramms? no idea what to do there

[zealous crag]

In my question?

[fast frigate]

the state diagramms in [1] pV and pT and VT