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The molecular mass is the entire sum of the masses of the atoms or components in the molecule.
Atomic mass of different elements are as follows:
Element | Atomic Mass |
Hydrogen | 1 u |
Oxygen | 16 u |
Chlorine | 35 u |
Carbon | 12 u |
Nitrogen | 16 u |
Molecular mass of H2=2 u
Molecular mass of H2= 2× Atomic mass of H
Molecular mass of O2=32 u
Molecular mass of O2= 2× Atomic mass of O
Molecular mass of Cl2=71 u
Molecular mass of Cl2= 2× Atomic mass of Cl
Molecular mass of CO2=44 u
Molecular mass of CO2= Atomic mass of C + 2× Atomic mass of O
Molecular mass of C2H6=30 u
Molecular mass of C2H6= 2 Atomic mass of C + 6 Atomic mass of H
Molecular mass of C2H4=28 u
Molecular mass of C2H4= 2 Atomic mass of C + 4 Atomic mass of H
Molecular mass of NH3=17 u
Molecular mass of NH3= Atomic mass of N + 3 Atomic mass of H
Molecular mass of CH3OH=32 u
Molecular mass of CH3OH= Atomic mass of C + Atomic mass of O + 4 Atomic mass of H
