1. ZnO
MZnO=65,39+16=81,39 g/mol
2. Cu3Cl2
MCu3Cl2=63,55x3+35,45x2=190,65+70,90=261,55 g/mol
3. H2S
MH2S=1,008x2+32,065=2,016+32,065=34,081 g/mol
4. H2O
MH2O=2,016+16=18,016 g/mol
5. Na3Cl
MNa3Cl=22,99x3+35,45=68,97+35,45=104,42 g/mol
