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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.
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Water undergoes a large change in density at 0 β c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 β c given that
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According to the textbook, what are some tools used by life scientists? *...
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