Molar and molecular weight of K

• Relative molecular weight of K: 39.0983
• Molar mass of K: 39.0983 g/mol (0.0391 kg/mol)

Calculation of the relative molecular and molar mass of K

• Mr[K] = Ar[K] = 39.0983 = 39.0983
• Molar mass (kg/mol) = Mr[K] : 1000 = 39.0983 : 1000 = 0.0391 kg/mol

Molar mass calculator