Which of the following elements are found in the same period? a) Cu and Fe
Ob) Cl and Kr
Oc) C and AI
d) B and Ga
e) Mg and Rb

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.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal