Molar and molecular weight of FeK2O4

• Molecular formula: FeK2O4 or K2FeO4
• Relative molecular weight of FeK2O4: 198.0392
• Molar mass of FeK2O4: 198.0392 g/mol (0.19804 kg/mol)

Calculation of the relative molecular and molar mass of FeK2O4

• Mr[FeK2O4] = Ar[Fe] + Ar[K] * 2 + Ar[O] * 4 = 55.845 + 39.0983 * 2 + 15.9994 * 4 = 198.0392
• Molar mass (kg/mol) = Mr[FeK2O4] : 1000 = 198.0392 : 1000 = 0.19804 kg/mol

FeK2O4: percent composition by element

• Iron (Fe) = 55.845 : 198.0392 * 100 = 28.199 %
• Potassium (K) = 78.1966 : 198.0392 * 100 = 39.485 %
• Oxygen (O) = 63.9976 : 198.0392 * 100 = 32.316 %

Molar mass calculator