Chem question (electrochemistry)?

Consider a concentration cell where both electrodes are made of Ni and in the left compartment [Ni^2+]=1.0 M. Calculate the cell potential at 25C when the concentration of Ni^2+ in the right-hand compartment is a) 1.0 M b) 2.0 M c) 0.10 M d) 4.0 x 10^-5 M e) both solutions are 2.5 M in Ni^2+. Also ID cathode, anode, & direction of electron flow for each.