Compare the strategies used to store, contain and dispose of high-level and low-level nuclear waste.

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.

Asolid that forms and separates from a liquid mixture is called

Is this correct if not can u correct me