What is the cell potential of an electrochemical cell that has the half-reactions shown below?
Fe3+ + € → Fe2+
Cu → Cu2+ + 2e

A. 0.43 v

B. 1.2 v

C. -0.43 v

D. 1.1 v

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water