Molar and molecular weight of BI3

• Relative molecular weight of BI3: 391.52441
• Molar mass of BI3: 391.52441 g/mol (0.39152 kg/mol)

Calculation of the relative molecular and molar mass of BI3

• Mr[BI3] = Ar[B] + Ar[I] * 3 = 10.811 + 126.90447 * 3 = 391.52441
• Molar mass (kg/mol) = Mr[BI3] : 1000 = 391.52441 : 1000 = 0.39152 kg/mol

BI3: percent composition by element

• Boron (B) = 10.811 : 391.52441 * 100 = 2.761 %
• Iodine (I) = 380.71341 : 391.52441 * 100 = 97.239 %

Molar mass calculator