Calculate the molecular masses of H2,O2,Cl2,Co2,Ch4,C2H2,NH3,C3OH.?m
Answers
molecular mass of H₂= 2× atomic mass of H
= 2×1 = 2 u.
molecular mass of O₂= 2× atomic mass of O
= 2 × 16u = 32 u.
molecular mass of Cl₂= 2 × atomic mass of Cl
= 2 × 35.5 u= 71 u.
molecular mass of CO₂= atomic mass of C + 2 × atomic mass of O
= 12 + 2×16
= 12+ 32= 44 u.
molecular mass of CH₄= atomic mass of C + 4 × atomic mass of H
= 12+ 4×1= 16 u.
molecular mass of C₂H₆= 2 × 12 + 6 × 1
= 30 u.
molecular mass of C₂H₄= 2 × 12 + 4 × 1
= 28 u.
molecular mass of NH₃= 14+ 3×1
= 17 u.
molecular mass of CH₃OH= 12 + 3× 1+ 16 × 1
= 32 u.