Molar and molecular weight of K2S

• Relative molecular weight of K2S: 110.2616
• Molar mass of K2S: 110.2616 g/mol (0.11026 kg/mol)

Calculation of the relative molecular and molar mass of K2S

• Mr[K2S] = Ar[K] * 2 + Ar[S] = 39.0983 * 2 + 32.065 = 110.2616
• Molar mass (kg/mol) = Mr[K2S] : 1000 = 110.2616 : 1000 = 0.11026 kg/mol

K2S: percent composition by element

• Potassium (K) = 78.1966 : 110.2616 * 100 = 70.919 %
• Sulfur (S) = 32.065 : 110.2616 * 100 = 29.081 %

Molar mass calculator