Molar and molecular weight of Mg3P2

• Relative molecular weight of Mg3P2: 134.862524
• Molar mass of Mg3P2: 134.862524 g/mol (0.13486 kg/mol)

Calculation of the relative molecular and molar mass of Mg3P2

• Mr[Mg3P2] = Ar[Mg] * 3 + Ar[P] * 2 = 24.305 * 3 + 30.973762 * 2 = 134.862524
• Molar mass (kg/mol) = Mr[Mg3P2] : 1000 = 134.862524 : 1000 = 0.13486 kg/mol

Mg3P2: percent composition by element

• Magnesium (Mg) = 72.915 : 134.862524 * 100 = 54.066 %
• Phosphorus (P) = 61.947524 : 134.862524 * 100 = 45.934 %

Molar mass calculator