How much more acidic is stomach acid (pH 2) than coffee (pH 5)? *
0
1,000,000x
O
They are the same pH
O 1000x
O
10x

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.