1. KI
K : 1 x 39 = 39 g / mol I : 1 x 126.
9 = 126.
9 g / mol
````````````````````````````````````` Mm = 165.
9 g / mol
2.
CuSO4
Cu : 1 x 63.
5 = 63.
5 g / mol S : 1 x 32 = 32 g / mol O : 4 x 15.
9 = 63.
6 g / mol
`````````````````````````````````````` Mm = 159.
1 g / mol
3.
H2SO4
H : 2 x 1.
00 = 2.
00 g / mol
S : 1 x 32 = 32 g / mol
O : 4 x 15.
9 = 63.
6 g / mol
```````````````````````````````````` Mm = 97.
6 g / mol
4.
HCl
H : 1 x 1.
0 = 1.
0 g / mol
Cl : 1 x 35.
4 = 35.
4 g / mol
````````````````````````````````` Mm = 36.
4 g / mol
5.
HNO3
H : 1 x 1.
0 = 1.
0 g / mol
N : 1 x 14.
0 = 14.
0 g / mol
O : 3 x 15.
9 = 47.
7 g / mol
```````````````````````````````````` Mm = 62.
7 g / mol
6.
Na2S
Na : 2 x 22.
9 = 45.
8 g / mol
S : 1 x 32.
0 = 32.
0 g / mol
```````````````````````````````````` Mm = 77.
8 g / mol
7.
CH4
C : 1 x 12.
0 = 12.
0 g / mol
H : 4 x 1.
0 = 4.
0 g / mol
```````````````````````````````````` Mm = 16 g / mol.