8. Solving a chemistry problem

3. Against the background of a 1 M HCl solution, Cd(II) forms a wave with a half-wave potential at -0.64 V (rel. NKE). In a 5 * 10-3 M solution, the limiting diffusion current is 3.96 μA. Calculate the diffusion current constant (Cd) and the diffusion coefficient if m=2.5 mg/l and t=3.02 s.