Please I need someone help ASAP 15. A lo g sample of 235U is placed in a nuclear
ID: 1321322 • Letter: P
Question
Please I need someone help ASAP
15. A lo g sample of 235U is placed in a nuclear reactor where it generates 100 W of thermal fission energy. (a) What. is the fission rate (fission/s) in the sample? (b) After one year in the core, estimate the number of atoms of Tc in the sample produced through the decay chain shown in Eq. (6.37). Notice that all fission products above 99/43 Tc in the decay chain have half-lives much shorter than 1 year; hence all of these fission products eau he assumed to decay to 99/43 Tc immediately. The equation:Explanation / Answer
(a) E= P *t
=100 * 1 sec= 100 J
(b) 1 kg of U 235 contains-2.54 * 10 ^24 atoms
10 g contains= 2.54 * 10 ^22 atoms
= 0.693/T half = 0.693/0.21 *10 ^6 =3.3 ^10 ^-6 years
N= N0 e-t
= 2.54 *10^22 *e-(3.3 ^10 ^-6)
=2.54 *10^22 atoms