What are the IUPAC name for the compounds and structure of elements??

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

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.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false