Molar and molecular weight of BCl3

• Relative molecular weight of BCl3: 117.17
• Molar mass of BCl3: 117.17 g/mol (0.11717 kg/mol)

Calculation of the relative molecular and molar mass of BCl3

• Mr[BCl3] = Ar[B] + Ar[Cl] * 3 = 10.811 + 35.453 * 3 = 117.17
• Molar mass (kg/mol) = Mr[BCl3] : 1000 = 117.17 : 1000 = 0.11717 kg/mol

BCl3: percent composition by element

• Boron (B) = 10.811 : 117.17 * 100 = 9.227 %
• Chlorine (Cl) = 106.359 : 117.17 * 100 = 90.773 %

Molar mass calculator