Molar and molecular weight of K2MnO4

• Relative molecular weight of K2MnO4: 197.132245
• Molar mass of K2MnO4: 197.132245 g/mol (0.19713 kg/mol)

Calculation of the relative molecular and molar mass of K2MnO4

• Mr[K2MnO4] = Ar[K] * 2 + Ar[Mn] + Ar[O] * 4 = 39.0983 * 2 + 54.938045 + 15.9994 * 4 = 197.132245
• Molar mass (kg/mol) = Mr[K2MnO4] : 1000 = 197.132245 : 1000 = 0.19713 kg/mol

K2MnO4: percent composition by element

• Potassium (K) = 78.1966 : 197.132245 * 100 = 39.667 %
• Manganese (Mn) = 54.938045 : 197.132245 * 100 = 27.869 %
• Oxygen (O) = 63.9976 : 197.132245 * 100 = 32.464 %

Molar mass calculator