How many moles of magnesium nitride form when 1.0 mole of magnesium reacts completely?

Answer 1

3Mg + N2 ==> Mg3N2
Look at the coefficients. 3 mols Mg gives 1 mol Mg3N2; therefore, 1 mol Mg will give ..... mol Mg3N2.

Answer 2

1/3=0.333