A constant current is passed through a solution containing Cu2+(aq) resulting in the deposition of 4.40 g of Cu at the cathode. Assuming a current efficiency of 100%, if this same current is passed through a solution of TcO4 for the same amount of time, how many grams of Tc would form at the cathode?
0.969 g
1.94 g
6.78 g
13.6 g