questions 7 and 8 stoichiometry

Question 7 Type numbers in the boxes. When 15.22 g of Cr is added to 0.750 L of a 0.801 M H.PO, solution, the ab Part 1: 5 points following reaction occurs: ab Part 2: 5 points 2 Cr + 2 H2PO4 + 2 CrPO4 + 3 H2 10 points Calculate the mass of the precipitate, CrPO,, that will be produced and the moles of the reactant in excess that will remain in the solution after the reaction is complete. 4 g CrPO4 mol excess reactant Question 8 Ether, (C,H,),0, which was originally used as an anesthetic but has been Type numbers in the boxes. ab Part 1: 5 points replaced by safer and more effective medications, is prepared by the aby Part 2: 5 points reaction of ethanol with sulfuric acid. 10 points 2 C2H5OH + H2SO4 + (C2H3)20 + H2SO4 + H2O If 15.9 g C,H,OH reacts with excess H SO4, what is the theoretical yield of (CH),0? g(CH),0 If this reaction actually produces 9.56 g (CH),0, what is the percent yield of (CH),0? %