(A) For an initial reaction mixture containing 0.500 mol Fe(s) and 0.500 mol H₂O(g), what is the maximum possible value for the extent of reaction, ? The chemical equation for the reaction is 3 Fe(s) + 4 H₂O(g) → Fe₃O₄(s) + 4 H₂(g).

(B) Consider the reaction 2 N₂ + 3 O₂ + 4 HCl → 4 NOCl + 2 H₂O. If the reaction of 1.00 g N₂ with excess O₂ and excess HCl yields 1.17 g NOCl, what is the extent of reaction and what percentage of the N₂ reacted?