To calculate the molar mass of Mg₃N₂ (magnesium nitride), we need to determine the atomic masses of magnesium (Mg) and nitrogen (N) and then multiply them by their respective subscripts in the formula.
The atomic mass of magnesium (Mg) is approximately 24.31 g/mol, and the atomic mass of nitrogen (N) is approximately 14.01 g/mol.
Mg₃N₂ consists of three magnesium atoms and two nitrogen atoms.
Molar mass of Mg₃N₂ = (3 × atomic mass of Mg) + (2 × atomic mass of N)
Molar mass of Mg₃N₂ = (3 × 24.31 g/mol) + (2 × 14.01 g/mol)
Molar mass of Mg₃N₂ ≈ 72.93 g/mol + 28.02 g/mol
Molar mass of Mg₃N₂ ≈ 100.95 g/mol
Therefore, the molar mass of Mg₃N₂ is approximately 100.95 g/mol.