If hydrogen were used as a fuel, it could be burned according to the following reaction:
H2(g) + 1/2O2(g) > H2O(g).
A) Use average bond energies to calculate ΔHrxn for this reaction.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.