Molar and molecular weight of S2W

• Molecular formula: S2W or WS2
• Relative molecular weight of S2W: 247.97
• Molar mass of S2W: 247.97 g/mol (0.24797 kg/mol)

Calculation of the relative molecular and molar mass of S2W

• Mr[S2W] = Ar[S] * 2 + Ar[W] = 32.065 * 2 + 183.84 = 247.97
• Molar mass (kg/mol) = Mr[S2W] : 1000 = 247.97 : 1000 = 0.24797 kg/mol

S2W: percent composition by element

• Sulfur (S) = 64.13 : 247.97 * 100 = 25.862 %
• Tungsten (W) = 183.84 : 247.97 * 100 = 74.138 %

Molar mass calculator