what the density of the alloy?

[tidal coyote]

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[uncut swan]

density is mass over volume

[sharp kayak]

oh wait, try to use ratio

[uncut swan]

find the combined mass and the combined volume, then divide

[midnight cave]

what is the mass or volume i dont understand...

[uncut swan]

(there is of course an easier way)

[sharp kayak]

mass is the g and volume is the cm^3

[uncut swan]

actually, this may not be true

[uncut swan]

this^

[sharp kayak]

so density here would be g/cm^3

so like, you know you have 100cm^3 of copper, right?

[midnight cave]

yeah

[sharp kayak]

what you need to do is find a way to get grams from the cm^3 in the density formula and the values given

[midnight cave]

and how do i do that?

[sharp kayak]

for example, $\frac{g}{cm^3}\cdot cm^3=g$

[barren narwhal]

;( | 追放された興奮

[sharp kayak]

now all you have to do is plug in values given

[midnight cave]

i still dont understand tbh

[shadow minnow]

$\rho=\frac{m}{v}$ where $\rho$ is density m is mass and v is volume

[sharp kayak]

wat 💀

[barren narwhal]

denzio321

[sharp kayak]

okay, have you learned dimensional analysis?

or like, cancelling out units?

[midnight cave]

yeah

[sharp kayak]

yes

so use that here

[sharp kayak]

cancelling out cm^3 to get grams for the sample of copper and cancelling out grams to get the sample of gold

then use the combined mass and combined volume, divide, and get your answer

[midnight cave]

i think the answer is D according to my calculations am i right?

[sharp kayak]

let me see

[midnight cave]

take your time

[sharp kayak]

yes you got it 👍

sorry i had a calculation error

[midnight cave]

ok tysm

your the best

[sharp kayak]

yw!

too nice!

[midnight cave]

+close