The way we do it is we use avogadjo's number. Remember, avogadjo's number refers to the number of atoms or electrons found in 1 mol of anything. Now, we're talking about 1 mol of electrons. That means we take this number of electrons and we multiply by our charge per electron. We see that averagadro's number of electrons per mole times 1.622 times ten to the negative 19 kilos per electron, which we got from here. The electrons cancel, and we get our units to be Coulomb per mole.