Solution A has a pH of 10, and solution B has a pH of 1. Which statement best describes these solutions?
A. Solution A is acidic, and solution B is basic.
B. Solution A is neutral, and solution B is basic.
C. Solution A is basic, and solution B is acidic.
D. Solution A is acidic, and solution B is neutral.

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.