Rusting of iron is a very common chemical reaction. it results in one form from fe reacting with oxygen gas to produce iron (iii) oxide. your sample of iron is 12.0 moles of iron. so which if these is a true statement? note: all numbers located immediately after elemental symbols below should be considered subscripts. a. 4.5 moles of o2 and produce 3.0 moles of fe2o3. b. 12.0 moles of o2 and produce 24.0 moles of fe2o3. c. 9.0 moles of o2 and produce 3.0 moles of fe2o3. d. 9.0 moles of o2 and produce 6.0 moles of fe2o3 e. none of the above