To determine the number of atoms of Mg in 87.3 grams of Mg3N2, we need to follow these steps:
Calculate the molar mass of Mg3N2: Mg: Atomic mass of Mg = 24.305 g/mol N: Atomic mass of N = 14.007 g/mol
Molar mass of Mg3N2 = (3 * Atomic mass of Mg) + (2 * Atomic mass of N) = (3 *