Molar Masses

[pine wave]

can anyone help me with this one please? we’re completing schoolworks and i need to finish it by tonight

[cunning sphinx]

1. 71
2. 56.1
3. 80
4. 162.3
5. 67.8
6. 121
7. 58.3
8. 352
9. 64
10. 98
11. 132.1
12. 60
13. 331.2
14. 380
15. 111