Why should scientists perform experiments? a. to understand a hypothesis b. to answer questions about right and wrong c. to answer specific questions d. to impress their coworkers

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

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.