Problem 2. A nuclear power plant produces radioactive waste as abyproduct. One such byproduct is an
isotope of the noble gas Krypton, 36Kr85, which decays via ?- decaywith half-life T1/2 = 10.8 yrs. Each decay
releases a ?- particle with energy = 0.240 MeV (on average). Thisenergy is converted into thermal energy as
the particle interacts with the surrounding particles.
SHORT QUESTIONS. 2 pts each.
Identify the following attributes of the daughter product thatresults from decay of 36Kr85.
A. What is the value of N? (i.e., number of neutrons)
B. What is the value of A? (i.e., mass number)
C. What the name of the element?
PROBLEMS. Show work for parts D and E .
D. (3 pts) Radioactive waste must be safely stored until it isno longer dangerous. At one nuclear plant, waste
containing 1.25 x 10^26 atoms of Kr-85 is placed in a container forstorage. How many ?- decays will occur
inside the container during the first year of storage?
E. (3 pts) Averaged over that year, what is the (average) rate ofheat production (Watts) inside the container, as
a result of ?- decay of Kr-85?
