Insert numbers next to these steps to show the correct order of events for a fuel cell to work. (1 - first step, 5 - last step). At the anode, the H2 loses electrons and becomes H+

At the cathode, H+ ions combine with electrons and O2 to produce H2O.

Electrons (e-) flow through the wire to produce electricity.

Fuel (H2) is pumped into the cell.

H+ flows through the electrolyte to the cathode.