Molar and molecular weight of Na2SO4

• Molecular formula: Na2SO4 or Na2O4S
• Relative molecular weight of Na2SO4: 142.04213856
• Molar mass of Na2SO4: 142.04213856 g/mol (0.14204 kg/mol)

Calculation of the relative molecular and molar mass of Na2SO4

• Mr[Na2SO4] = Ar[Na] * 2 + Ar[O] * 4 + Ar[S] = 22.98976928 * 2 + 15.9994 * 4 + 32.065 = 142.04213856
• Molar mass (kg/mol) = Mr[Na2SO4] : 1000 = 142.04213856 : 1000 = 0.14204 kg/mol

Na2SO4: percent composition by element

• Sodium (Na) = 45.97953856 : 142.04213856 * 100 = 32.37 %
• Oxygen (O) = 63.9976 : 142.04213856 * 100 = 45.055 %
• Sulfur (S) = 32.065 : 142.04213856 * 100 = 22.574 %

Molar mass calculator