Molar and molecular weight of Na2S

• Relative molecular weight of Na2S: 78.04453856
• Molar mass of Na2S: 78.04453856 g/mol (0.07804 kg/mol)

Calculation of the relative molecular and molar mass of Na2S

• Mr[Na2S] = Ar[Na] * 2 + Ar[S] = 22.98976928 * 2 + 32.065 = 78.04453856
• Molar mass (kg/mol) = Mr[Na2S] : 1000 = 78.04453856 : 1000 = 0.07804 kg/mol

Na2S: percent composition by element

• Sodium (Na) = 45.97953856 : 78.04453856 * 100 = 58.914 %
• Sulfur (S) = 32.065 : 78.04453856 * 100 = 41.086 %

Molar mass calculator