Molar and molecular weight of CuBr

• Molecular formula: CuBr or BrCu
• Relative molecular weight of CuBr: 143.45
• Molar mass of CuBr: 143.45 g/mol (0.14345 kg/mol)

Calculation of the relative molecular and molar mass of CuBr

• Mr[CuBr] = Ar[Br] + Ar[Cu] = 79.904 + 63.546 = 143.45
• Molar mass (kg/mol) = Mr[CuBr] : 1000 = 143.45 : 1000 = 0.14345 kg/mol

CuBr: percent composition by element

• Bromine (Br) = 79.904 : 143.45 * 100 = 55.702 %
• Copper (Cu) = 63.546 : 143.45 * 100 = 44.298 %

Molar mass calculator