Iron reacts with oxygen to produce iron(iii) oxide.4 fe(s) + 3 o2(g) → 2 fe2o3(s)if 6.4 moles of fe react with excess o2, how many moles of fe2o3 can be formed?a. 1.6 molb. 2.4 molc. 3.2 mold. 4.3 mole. 6.4 mol