Question

Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy. Assume 1 kg of fuel is used, and the mass of the water produced is 1.10 x 10^-11 kg. How much energy is produced by this fuel cell?

Answer 1

E=mc²

E= 999999999989 (3×108)∧2

  =89,875,517,872,693 J