Molar and molecular weight of MnO2

• Relative molecular weight of MnO2: 86.936845
• Molar mass of MnO2: 86.936845 g/mol (0.08694 kg/mol)

Calculation of the relative molecular and molar mass of MnO2

• Mr[MnO2] = Ar[Mn] + Ar[O] * 2 = 54.938045 + 15.9994 * 2 = 86.936845
• Molar mass (kg/mol) = Mr[MnO2] : 1000 = 86.936845 : 1000 = 0.08694 kg/mol

MnO2: percent composition by element

• Manganese (Mn) = 54.938045 : 86.936845 * 100 = 63.193 %
• Oxygen (O) = 31.9988 : 86.936845 * 100 = 36.807 %

Molar mass calculator