22. A battery is constructed from two half cells: Zn|Zn2+(1.0 M) and Mn|Mn2+(1.0 M)； the volume of each electrolyte solution is 300 mL. The battery is allowed to discharge at a constant current of 9.65 amperes. Given that: F = 96500 C•mol-1 ； E° = -0.76 V for Zn2+/Zn and -1.18 V for Mn2+/Mn. Answer the following questions.
(A) Indicate the anode, cathode, and direction of electron flow of the cell.    3%
(B) Calculate the standard cell potential.    2%
(C) The equilibrium constant of the cell reaction is K； log K = ?    2%
(D) Find [Zn2+] after 10 min. of discharging.    3%