Molar and molecular weight of WBr2

• Relative molecular weight of WBr2: 343.648
• Molar mass of WBr2: 343.648 g/mol (0.34365 kg/mol)

Calculation of the relative molecular and molar mass of WBr2

• Mr[WBr2] = Ar[W] + Ar[Br] * 2 = 183.84 + 79.904 * 2 = 343.648
• Molar mass (kg/mol) = Mr[WBr2] : 1000 = 343.648 : 1000 = 0.34365 kg/mol

WBr2: percent composition by element

• Tungsten (W) = 183.84 : 343.648 * 100 = 53.497 %
• Bromine (Br) = 159.808 : 343.648 * 100 = 46.503 %

Molar mass calculator