Molar and molecular weight of MgBr2

• Molecular formula: MgBr2 or Br2Mg
• Relative molecular weight of MgBr2: 184.113
• Molar mass of MgBr2: 184.113 g/mol (0.18411 kg/mol)

Calculation of the relative molecular and molar mass of MgBr2

• Mr[MgBr2] = Ar[Br] * 2 + Ar[Mg] = 79.904 * 2 + 24.305 = 184.113
• Molar mass (kg/mol) = Mr[MgBr2] : 1000 = 184.113 : 1000 = 0.18411 kg/mol

MgBr2: percent composition by element

• Bromine (Br) = 159.808 : 184.113 * 100 = 86.799 %
• Magnesium (Mg) = 24.305 : 184.113 * 100 = 13.201 %

Molar mass calculator