Molar and molecular weight of Mg2C3

• Molecular formula: Mg2C3 or C3Mg2
• Relative molecular weight of Mg2C3: 84.6421
• Molar mass of Mg2C3: 84.6421 g/mol (0.08464 kg/mol)

Calculation of the relative molecular and molar mass of Mg2C3

• Mr[Mg2C3] = Ar[C] * 3 + Ar[Mg] * 2 = 12.0107 * 3 + 24.305 * 2 = 84.6421
• Molar mass (kg/mol) = Mr[Mg2C3] : 1000 = 84.6421 : 1000 = 0.08464 kg/mol

Mg2C3: percent composition by element

• Carbon (C) = 36.0321 : 84.6421 * 100 = 42.57 %
• Magnesium (Mg) = 48.61 : 84.6421 * 100 = 57.43 %

Molar mass calculator