Molar and molecular weight of CO

• Relative molecular weight of CO: 28.0101
• Molar mass of CO: 28.0101 g/mol (0.02801 kg/mol)

Calculation of the relative molecular and molar mass of CO

• Mr[CO] = Ar[C] + Ar[O] = 12.0107 + 15.9994 = 28.0101
• Molar mass (kg/mol) = Mr[CO] : 1000 = 28.0101 : 1000 = 0.02801 kg/mol

CO: percent composition by element

• Carbon (C) = 12.0107 : 28.0101 * 100 = 42.88 %
• Oxygen (O) = 15.9994 : 28.0101 * 100 = 57.12 %

Molar mass calculator