Molar and molecular weight of CoBr2

• Relative molecular weight of CoBr2: 218.741195
• Molar mass of CoBr2: 218.741195 g/mol (0.21874 kg/mol)

Calculation of the relative molecular and molar mass of CoBr2

• Mr[CoBr2] = Ar[Co] + Ar[Br] * 2 = 58.933195 + 79.904 * 2 = 218.741195
• Molar mass (kg/mol) = Mr[CoBr2] : 1000 = 218.741195 : 1000 = 0.21874 kg/mol

CoBr2: percent composition by element

• Cobalt (Co) = 58.933195 : 218.741195 * 100 = 26.942 %
• Bromine (Br) = 159.808 : 218.741195 * 100 = 73.058 %

Molar mass calculator