Molar and molecular weight of HgO

• Relative molecular weight of HgO: 216.5894
• Molar mass of HgO: 216.5894 g/mol (0.21659 kg/mol)

Calculation of the relative molecular and molar mass of HgO

• Mr[HgO] = Ar[Hg] + Ar[O] = 200.59 + 15.9994 = 216.5894
• Molar mass (kg/mol) = Mr[HgO] : 1000 = 216.5894 : 1000 = 0.21659 kg/mol

HgO: percent composition by element

• Mercury (Hg) = 200.59 : 216.5894 * 100 = 92.613 %
• Oxygen (O) = 15.9994 : 216.5894 * 100 = 7.387 %

Molar mass calculator