Electrolysis? I know ... drill holes on one side of the tub and thread plastic-coated copper wire through them to secure rebar, ensuring the middle of the rebar sits at the waterline.

The volume of hydrogen given off is twice the volume of oxygen given off.

From there, the copper sulfate is placed in an electrolysis cell using a platinum cathode and copper anodes to pass current through it. After the process is complete, all of the copper will have ...