HELP PLEASE.
how to find the number of neutrons of an element without a given R. A.M.
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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.

Draw two cyclic constitutional isomers of cis-1

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