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Chapter 5: Q. 5.41 (page 160)

What is nuclear fission?

Short Answer

Expert verified

The fission reaction isU92233+01n→54137Xe+3894Sr+301n.

Step by step solution

01

Introduction

Nuclear fission occurs whenever the nucleus of an atom breaks into lighter nuclei as a result of a nuclear reaction. Such decay can be replicated in a lab by achieving the requisite conditions, or it can be natural spontaneous separation by radioactive decay . The aggregate mass of the resultant fragments is usually smaller than the original.

02

Explanation

The breaking of Uranium-233is a type of nuclear fission. The equation for the reaction is as follows:

U92233+01n→54137Xe+3894Sr+301n

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Most popular questions from this chapter

Match the type of radiation (1to 3)with each of the following statements:

  1. alpha particle
  2. beta particle
  3. gamma radiation
  1. penetrates farthest into skin and body tissues
  2. shielding protection includes lab coats and gloves
  3. travels only a short distance in air

Carbon dating of small bits of charcoal used in cave paintings has determined that some of the paintings are from 10000to 30000old. Carbon-14has a half-life of 5730. In a 1-μgsample of carbon from a live tree, the activity of carbon-14is 6.4μCi. If researchers determine that 1μgof charcoal from a prehistoric cave painting in France has an activity of 0.80μCi, what is the age of the painting?(5.4)

The technique of carbon dating is used to determine the age of ancient cave paintings.

Write a balanced equation for the beta decay of each of the following radioactive isotopes:

(a) K1944

(b) iron-59

(c) potassium-42

(d)Ba56141

For each of the following, indicate if the number of half-lives elapsed is:

1. one half-life

2. two half-lives

3. three half-lives

a. a sample of Ce-141with a half-life of 32.5days after 32.5days

b. a sample of localid="1652506143385" F-18with a half-life of localid="1652506148132" 110minafter localid="1652506151432" 330min

c. a sample of localid="1652506155581" Au-198with a half-life of localid="1652506158916" 2.7days after localid="1652506161934" 5.4days

The half-life for the radioactive decay of calcium-47 is 4.5 days. If a sample has an activity of 1.0μCi after 27 days, what was the initial activity, in microcuries, of the sample? (5.3,5.4)
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