Molar and molecular weight of MgSeO3

• Relative molecular weight of MgSeO3: 151.2632
• Molar mass of MgSeO3: 151.2632 g/mol (0.15126 kg/mol)

Calculation of the relative molecular and molar mass of MgSeO3

• Mr[MgSeO3] = Ar[Mg] + Ar[Se] + Ar[O] * 3 = 24.305 + 78.96 + 15.9994 * 3 = 151.2632
• Molar mass (kg/mol) = Mr[MgSeO3] : 1000 = 151.2632 : 1000 = 0.15126 kg/mol

MgSeO3: percent composition by element

• Magnesium (Mg) = 24.305 : 151.2632 * 100 = 16.068 %
• Selenium (Se) = 78.96 : 151.2632 * 100 = 52.2 %
• Oxygen (O) = 47.9982 : 151.2632 * 100 = 31.732 %

Molar mass calculator