Molar and molecular weight of CaO2

• Relative molecular weight of CaO2: 72.0768
• Molar mass of CaO2: 72.0768 g/mol (0.07208 kg/mol)

Calculation of the relative molecular and molar mass of CaO2

• Mr[CaO2] = Ar[Ca] + Ar[O] * 2 = 40.078 + 15.9994 * 2 = 72.0768
• Molar mass (kg/mol) = Mr[CaO2] : 1000 = 72.0768 : 1000 = 0.07208 kg/mol

CaO2: percent composition by element

• Calcium (Ca) = 40.078 : 72.0768 * 100 = 55.605 %
• Oxygen (O) = 31.9988 : 72.0768 * 100 = 44.395 %

Molar mass calculator