In human cells, a compound known as NADH is involved in a reaction that generates an electrical potential. The reaction is based on the two half-reactions shown in the table above. The balanced equation for the overall reaction is shown below. O2+2H++2NADH→2H2O+2NAD+ (a) How many moles of electrons are transferred for each mole of O2 that reacts? Justify your answer in terms of the balanced equation and the change in oxidation number of oxygen. (b) Calculate the electrochemical potential of the overall reaction. (c) Calculate the value of ΔG° for the overall reaction. (d) When the concentration of NADH increases while the concentration of NAD+ decreases, will the electrochemical potential increase, decrease, or remain the same? Justify your answer