Molar and molecular weight of In2O3

• Relative molecular weight of In2O3: 277.6342
• Molar mass of In2O3: 277.6342 g/mol (0.27763 kg/mol)

Calculation of the relative molecular and molar mass of In2O3

• Mr[In2O3] = Ar[In] * 2 + Ar[O] * 3 = 114.818 * 2 + 15.9994 * 3 = 277.6342
• Molar mass (kg/mol) = Mr[In2O3] : 1000 = 277.6342 : 1000 = 0.27763 kg/mol

In2O3: percent composition by element

• Indium (In) = 229.636 : 277.6342 * 100 = 82.712 %
• Oxygen (O) = 47.9982 : 277.6342 * 100 = 17.288 %

Molar mass calculator