Molar and molecular weight of Mg3(PO4)2

• Molecular formula: Mg3(PO4)2 or Mg3O8P2
• Relative molecular weight of Mg3(PO4)2: 262.857724
• Molar mass of Mg3(PO4)2: 262.857724 g/mol (0.26286 kg/mol)

Calculation of the relative molecular and molar mass of Mg3(PO4)2

• Mr[Mg3(PO4)2] = Ar[Mg] * 3 + Ar[O] * 8 + Ar[P] * 2 = 24.305 * 3 + 15.9994 * 8 + 30.973762 * 2 = 262.857724
• Molar mass (kg/mol) = Mr[Mg3(PO4)2] : 1000 = 262.857724 : 1000 = 0.26286 kg/mol

Mg3(PO4)2: percent composition by element

• Magnesium (Mg) = 72.915 : 262.857724 * 100 = 27.739 %
• Oxygen (O) = 127.9952 : 262.857724 * 100 = 48.694 %
• Phosphorus (P) = 61.947524 : 262.857724 * 100 = 23.567 %

Molar mass calculator