Molar and molecular weight of Mn3As2

• Relative molecular weight of Mn3As2: 314.657335
• Molar mass of Mn3As2: 314.657335 g/mol (0.31466 kg/mol)

Calculation of the relative molecular and molar mass of Mn3As2

• Mr[Mn3As2] = Ar[Mn] * 3 + Ar[As] * 2 = 54.938045 * 3 + 74.9216 * 2 = 314.657335
• Molar mass (kg/mol) = Mr[Mn3As2] : 1000 = 314.657335 : 1000 = 0.31466 kg/mol

Mn3As2: percent composition by element

• Manganese (Mn) = 164.814135 : 314.657335 * 100 = 52.379 %
• Arsenic (As) = 149.8432 : 314.657335 * 100 = 47.621 %

Molar mass calculator