All fuel cells
A. are rechargeable and have electrodes that are separated.
B. are galvanic cells and the required reactants are stored in the cells. C. are rechargeable and the reactants are stored externally and continually supplied.
D. convert chemical energy into electrical energy and the reactants are continually supplied

Solution

2) An alternative means of providing power to cars is the combustion of H₂ in fuel cells. i. If 582 L of H₂ (measured at 100 kPa and 18 °C) were combusted, what amount of energy, in megajoules, would be released?

Solution