Molar and molecular weight of Cl2O7

• Relative molecular weight of Cl2O7: 182.9018
• Molar mass of Cl2O7: 182.9018 g/mol (0.1829 kg/mol)

Calculation of the relative molecular and molar mass of Cl2O7

• Mr[Cl2O7] = Ar[Cl] * 2 + Ar[O] * 7 = 35.453 * 2 + 15.9994 * 7 = 182.9018
• Molar mass (kg/mol) = Mr[Cl2O7] : 1000 = 182.9018 : 1000 = 0.1829 kg/mol

Cl2O7: percent composition by element

• Chlorine (Cl) = 70.906 : 182.9018 * 100 = 38.767 %
• Oxygen (O) = 111.9958 : 182.9018 * 100 = 61.233 %

Molar mass calculator