Molar and molecular weight of AlBr3

• Relative molecular weight of AlBr3: 266.6935386
• Molar mass of AlBr3: 266.6935386 g/mol (0.26669 kg/mol)

Calculation of the relative molecular and molar mass of AlBr3

• Mr[AlBr3] = Ar[Al] + Ar[Br] * 3 = 26.9815386 + 79.904 * 3 = 266.6935386
• Molar mass (kg/mol) = Mr[AlBr3] : 1000 = 266.6935386 : 1000 = 0.26669 kg/mol

AlBr3: percent composition by element

• Aluminum (Al) = 26.9815386 : 266.6935386 * 100 = 10.117 %
• Bromine (Br) = 239.712 : 266.6935386 * 100 = 89.883 %

Molar mass calculator