What is the size range of particles in a colloid? a) between 1 nm and 1000 nm b) between 1 nm and 10 nm c) between 100 nm and 1000 nm d) between 1000 nm and 2000 nm

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.