An isotope of hydrogen commonly referred to as heavy water is​

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.

Adepositional also feature that forms where a stream enters a lake or an ocean is a

Answer explain why it is not possible to deduce a complete order of reactivity.