Author Question: In the fission reaction 235U + 1n 141Ba + 92Kr + neutrons, the number of neutrons produced is A) ... (Read 140 times)

naturalchemist · **on:** Jul 29, 2018

In the fission reaction 235U + 1n 141Ba + 92Kr + neutrons, the number of neutrons produced is

A)

0.
B)

4.
C)

1.
D)

3.
E)

2.

Question 2

Living matter has 1.3 10-10 of its carbon in the form of 14C which has a half-life of 5730 yr. A mammoth bone has a 300-g sample of carbon separated from it, and the sample is found to have an activity of 20 decays per second.

How old is the bone? A)

15,000 yr
B)

10,900 yr
C)

11,500 yr
D)

7,600 yr
E)

6,400 yr