How many atoms of hydrogen-1 are in a 1.007-g sample?

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.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Light waves are as they pass through the