Molar and molecular weight of LiBr

• Relative molecular weight of LiBr: 86.845
• Molar mass of LiBr: 86.845 g/mol (0.08685 kg/mol)

Calculation of the relative molecular and molar mass of LiBr

• Mr[LiBr] = Ar[Li] + Ar[Br] = 6.941 + 79.904 = 86.845
• Molar mass (kg/mol) = Mr[LiBr] : 1000 = 86.845 : 1000 = 0.08685 kg/mol

LiBr: percent composition by element

• Lithium (Li) = 6.941 : 86.845 * 100 = 7.992 %
• Bromine (Br) = 79.904 : 86.845 * 100 = 92.008 %

Molar mass calculator