Molar and molecular weight of WBr3

• Relative molecular weight of WBr3: 423.552
• Molar mass of WBr3: 423.552 g/mol (0.42355 kg/mol)

Calculation of the relative molecular and molar mass of WBr3

• Mr[WBr3] = Ar[W] + Ar[Br] * 3 = 183.84 + 79.904 * 3 = 423.552
• Molar mass (kg/mol) = Mr[WBr3] : 1000 = 423.552 : 1000 = 0.42355 kg/mol

WBr3: percent composition by element

• Tungsten (W) = 183.84 : 423.552 * 100 = 43.404 %
• Bromine (Br) = 239.712 : 423.552 * 100 = 56.596 %

Molar mass calculator