How many grams of magnesium nitride are formed from 45.1 moles of magnesium?

Answer 1

3Mg + N2 ==> Mg3N2
mols Mg = 45.1
mols Mg3N2 = 45.1 x (1 mol Mg3N2/3 mols mg) = 45.1 x (1/3) = ? mols.
g = mols x molar mass.