[ Chemistry ] Open Question : Electrochemistry Problem?

M(s) + Cu2+ (aq) ---> M2+ (aq) + Cu(s) For the reaction above E standard = 0.740 volts at 25 C. a) Calculate the standard electrode potential for the reduction half reaction: M2+ (aq) + 2e- ---> M(s) b) A cell is constructed in which the half reaction above occurs. Each substance is initially in its standard state, and identical volumes of the solutions are used. The cell is then discharged. Calculate the value of the cell potential E, when [Cu2+] has dropped to .20 molar. c) If the cell reaction above reaches equilibrium, find the ratio [M2+](aq)/[Cu2+](aq). Thanks in advance!

Source: http://answers.yahoo.com/question/index?qid=20110410155915AAlMvWU

Jennifer Aniston Kim Kardashian Bruce Willis