Molar and molecular weight of Mg2SiO4

• Molecular formula: Mg2SiO4 or Mg2O4Si
• Relative molecular weight of Mg2SiO4: 140.6931
• Molar mass of Mg2SiO4: 140.6931 g/mol (0.14069 kg/mol)

Calculation of the relative molecular and molar mass of Mg2SiO4

• Mr[Mg2SiO4] = Ar[Mg] * 2 + Ar[O] * 4 + Ar[Si] = 24.305 * 2 + 15.9994 * 4 + 28.0855 = 140.6931
• Molar mass (kg/mol) = Mr[Mg2SiO4] : 1000 = 140.6931 : 1000 = 0.14069 kg/mol

Mg2SiO4: percent composition by element

• Magnesium (Mg) = 48.61 : 140.6931 * 100 = 34.55 %
• Oxygen (O) = 63.9976 : 140.6931 * 100 = 45.487 %
• Silicon (Si) = 28.0855 : 140.6931 * 100 = 19.962 %

Molar mass calculator