Molar and molecular weight of HgSe

• Relative molecular weight of HgSe: 279.55
• Molar mass of HgSe: 279.55 g/mol (0.27955 kg/mol)

Calculation of the relative molecular and molar mass of HgSe

• Mr[HgSe] = Ar[Hg] + Ar[Se] = 200.59 + 78.96 = 279.55
• Molar mass (kg/mol) = Mr[HgSe] : 1000 = 279.55 : 1000 = 0.27955 kg/mol

HgSe: percent composition by element

• Mercury (Hg) = 200.59 : 279.55 * 100 = 71.755 %
• Selenium (Se) = 78.96 : 279.55 * 100 = 28.245 %

Molar mass calculator