U 4 coulometric titration in the presence of excess Ce^{3 }Ce 3 require 412 seconds to reach the equivalence point using a constant current of 50.0 mA. How many moles of U^{4 }U 4 were present in the solution

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Which of these best describes an ionic bond?

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.