Calculate molecular masses of following

1. H2O
2. CO2
3. H2
4. NH3
5. CH4
6. C2H6
7. C2H4
8. CH3OH

Molecular mass of :
H₂O = 1$\times$ 2 + 16 = 18 u

CO₂ = 12 + 16 $\times$ 2 = 44 u

H₂ = 1 $\times$ 2 = 2 u

NH₃ = 14 + 1$\times$ 3 = 17 u

CH₄ = 12 + 1$\times$ 4 = 16 u

C₂H₆ = 12$\times$ 2 + 1  6 = 30 u

C₂H₄ = 12 ​$\times$ 2 + 1 ​$\times$ 4 = 28 u

CH₃OH = 12 + 16 + 4 = 32 u