Molar and molecular weight of CoSe

• Relative molecular weight of CoSe: 137.893195
• Molar mass of CoSe: 137.893195 g/mol (0.13789 kg/mol)

Calculation of the relative molecular and molar mass of CoSe

• Mr[CoSe] = Ar[Co] + Ar[Se] = 58.933195 + 78.96 = 137.893195
• Molar mass (kg/mol) = Mr[CoSe] : 1000 = 137.893195 : 1000 = 0.13789 kg/mol

CoSe: percent composition by element

• Cobalt (Co) = 58.933195 : 137.893195 * 100 = 42.738 %
• Selenium (Se) = 78.96 : 137.893195 * 100 = 57.262 %

Molar mass calculator