7. "The ore hematite, Fe2O3, is an important source of iron. The iron is extracted by reacting the hematite with carbon monoxide, according to the following reaction: Fe2O3(s) + 3CO(g) 2Fe(s) + 3C02(g) a) If 1 mol hematite reacts with 6 mol carbon monoxide, which reactant is the limiting reactant? b) What amount (in mol) of iron would be produced? ANSWER: 8. Write a brief e-mail to explain to a friend why an industrial process might be designed with one or more reactants in excess. Go ANSWER 9. Explain why an engineering technician involved in designing a process for making acetylsalicylic acid would need to be able to carry out stoichiometric calculations. Co ANSWER: 10. The following reaction takes place in an alkaline battery. Th Zn(s) + 2MnO2(s) + H20(1) Zn(OH)2(s) + Mn,O3(s) a) Determine the limiting reactant if 25.0 g of Zn and 30.0 g of MnO2 are used. Assume there is excess H2O(l). b) Determine the mass of Zn(OH), produced