Molar and molecular weight of CO2

• Relative molecular weight of CO2: 44.0095
• Molar mass of CO2: 44.0095 g/mol (0.04401 kg/mol)

Calculation of the relative molecular and molar mass of CO2

• Mr[CO2] = Ar[C] + Ar[O] * 2 = 12.0107 + 15.9994 * 2 = 44.0095
• Molar mass (kg/mol) = Mr[CO2] : 1000 = 44.0095 : 1000 = 0.04401 kg/mol

CO2: percent composition by element

• Carbon (C) = 12.0107 : 44.0095 * 100 = 27.291 %
• Oxygen (O) = 31.9988 : 44.0095 * 100 = 72.709 %

Molar mass calculator