Molar and molecular weight of Mn2O3

• Relative molecular weight of Mn2O3: 157.87429
• Molar mass of Mn2O3: 157.87429 g/mol (0.15787 kg/mol)

Calculation of the relative molecular and molar mass of Mn2O3

• Mr[Mn2O3] = Ar[Mn] * 2 + Ar[O] * 3 = 54.938045 * 2 + 15.9994 * 3 = 157.87429
• Molar mass (kg/mol) = Mr[Mn2O3] : 1000 = 157.87429 : 1000 = 0.15787 kg/mol

Mn2O3: percent composition by element

• Manganese (Mn) = 109.87609 : 157.87429 * 100 = 69.597 %
• Oxygen (O) = 47.9982 : 157.87429 * 100 = 30.403 %

Molar mass calculator