What happens to the kinetic energy of a snowball as it rolls across the lawn and gains mass

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

What is a property of a double replacement reaction

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.