Molar and molecular weight of WS2

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

Calculation of the relative molecular and molar mass of WS2

• Mr[WS2] = Ar[S] * 2 + Ar[W] = 32.065 * 2 + 183.84 = 247.97
• Molar mass (kg/mol) = Mr[WS2] : 1000 = 247.97 : 1000 = 0.24797 kg/mol

WS2: 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