Molar and molecular weight of CrBr2

• Molecular formula: CrBr2 or Br2Cr
• Relative molecular weight of CrBr2: 211.8041
• Molar mass of CrBr2: 211.8041 g/mol (0.2118 kg/mol)

Calculation of the relative molecular and molar mass of CrBr2

• Mr[CrBr2] = Ar[Br] * 2 + Ar[Cr] = 79.904 * 2 + 51.9961 = 211.8041
• Molar mass (kg/mol) = Mr[CrBr2] : 1000 = 211.8041 : 1000 = 0.2118 kg/mol

CrBr2: percent composition by element

• Bromine (Br) = 159.808 : 211.8041 * 100 = 75.451 %
• Chromium (Cr) = 51.9961 : 211.8041 * 100 = 24.549 %

Molar mass calculator