Question 1

Write a complete,balanced equation to represent the formation of manganese-55 by the beta decay of another nuclide.

Accepted Answer

The answer of Write a complete,balanced equation to represent the...

Question 2

Select the nuclide that completes the following nuclear reaction.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 3

Identify the missing species in the following nuclear transmutation.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 4

Iodine-131,t1/2 = 8.0 days,is used in diagnosis and treatment of thyroid gland diseases.If a laboratory sample of iodine-131 initially emits 9.95 $\times$ 1018 $\beta$ particles per day,how long will it take for the activity to drop to 6.22 $\times$ 1017 $\beta$ particles per day?

Accepted Answer

A) 2.0 days 
B) 16 days 
C) 32 days 
D) 128 days 
E) None of these choices is correct. 
A) 2.0 days 
B) 16 days 
C) 32 days 
D) 128 days 
E) None of these choices is correct.

Question 5

Which one of the following equations correctly represents alpha decay of  
?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 6

Fill in missing sub- and superscripts for all particles to complete the following equation for beta decay.

Accepted Answer

The answer of Fill in missing sub- and superscripts for...

Question 7

A certain isotope has a specific activity of 7.29 $\times$ 10-4 Ci/g.How many $\alpha$ particles will a 75.0 mg sample emit in one hour?

Accepted Answer

A) 9.99 $\times$ 104 
B) 2.02 $\times$ 106 
C) 7.28 $\times$ 109 
D) 1.29 $\times$ 1012 
E) None of these choices is correct. 
A) 9.99 $\times$ 104 
B) 2.02 $\times$ 106 
C) 7.28 $\times$ 109 
D) 1.29 $\times$ 1012 
E) None of these choices is correct.

Question 8

After 4 half-lives,the fraction of a radioactive isotope which still remains is approximately one eighth.

Accepted Answer

A) True 
 B)False

Question 9

The isotope  
Has a half-life of 7.5 seconds.If a sample contains 144 atoms of  
,approximately how many such atoms were there present 30 seconds earlier?

Accepted Answer

A) 576 
B) 1152 
C) 2304 
D) 4320 
E) 4.30 $\times$ 108 
A) 576 
B) 1152 
C) 2304 
D) 4320 
E) 4.30 $\times$ 108

Question 10

Radioactive decay follows zero-order kinetics.

Accepted Answer

A) True 
 B)False

Question 11

Write a complete,balanced equation to represent the electron capture decay of argon-37.

Accepted Answer

The answer of Write a complete,balanced equation to represent the...

Question 12

Which of the following materials is put into a nuclear reactor to slow the chain reaction?

Accepted Answer

A) heavy water 
B) moderators 
C) control rods 
D) reflectors 
E) chlorine 
A) heavy water 
B) moderators 
C) control rods 
D) reflectors 
E) chlorine

Question 13

Select the nuclide that completes the following nuclear reaction.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 14

An isotope with a low value of N/Z will generally decay through

Accepted Answer

A) ($\alpha$ decay.) 
B) 9$\beta$ decay.) 
C) ($\gamma$ decay.) 
D) electron capture. 
E) spontaneous fission. 
A) ($\alpha$ decay.) 
B) 9$\beta$ decay.) 
C) ($\gamma$ decay.) 
D) electron capture. 
E) spontaneous fission.

Question 15

Which one of the following equations correctly represents electron capture by the  
Nucleus?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 16

The binding energy per nucleon reaches a maximum for the isotope   
.

Accepted Answer

A) True 
 B)False

Question 17

A pure sample of tritium,3H,was prepared and sealed in a container for a number of years.Tritium undergoes $\beta$ decay with a half-life of 12.32 years.How long has the container been sealed if analysis of the contents shows there are 5.25 mol of 3H and 6.35 mol of 3He present?

Accepted Answer

A) 2.34 y 
B) 3.38 y 
C) 9.77 y 
D) 14.1 y 
E) 25.6 y 
A) 2.34 y 
B) 3.38 y 
C) 9.77 y 
D) 14.1 y 
E) 25.6 y

Question 18

Fill in missing sub- and superscripts for all particles to complete the following equation for positron decay.

Accepted Answer

The answer of Fill in missing sub- and superscripts for...

Question 19

Briefly explain the relationship between the rad and the rem as units of radiation dosage.

Accepted Answer

The rad (radiation absorbed dose)measure

Question 20

The isotope  
Is unstable.This is predictable because

Accepted Answer

A) N/Z $\neq$ 1. 
B) N/Z is relatively low and Z < 20. 
C) N/Z is relatively large and Z < 20. 
D) Z is small. 
E) N is large. 
A) N/Z $\neq$ 1. 
B) N/Z is relatively low and Z < 20. 
C) N/Z is relatively large and Z < 20. 
D) Z is small. 
E) N is large.

Exam 23: Nuclear Reactions and Their Applications

Write a complete,balanced equation to represent the formation of manganese-55 by the beta decay of another nuclide.

Select the nuclide that completes the following nuclear reaction.

Identify the missing species in the following nuclear transmutation.

Iodine-131,t1/2 = 8.0 days,is used in diagnosis and treatment of thyroid gland diseases.If a laboratory sample of iodine-131 initially emits 9.95 ×\times× 1018 β\betaβ particles per day,how long will it take for the activity to drop to 6.22 ×\times× 1017 β\betaβ particles per day?

Which one of the following equations correctly represents alpha decay of ?

Fill in missing sub- and superscripts for all particles to complete the following equation for beta decay.

A certain isotope has a specific activity of 7.29 ×\times× 10-4 Ci/g.How many α\alphaα particles will a 75.0 mg sample emit in one hour?

After 4 half-lives,the fraction of a radioactive isotope which still remains is approximately one eighth.

The isotope Has a half-life of 7.5 seconds.If a sample contains 144 atoms of ,approximately how many such atoms were there present 30 seconds earlier?

Radioactive decay follows zero-order kinetics.

Write a complete,balanced equation to represent the electron capture decay of argon-37.

Which of the following materials is put into a nuclear reactor to slow the chain reaction?

Select the nuclide that completes the following nuclear reaction.

An isotope with a low value of N/Z will generally decay through

Which one of the following equations correctly represents electron capture by the Nucleus?

The binding energy per nucleon reaches a maximum for the isotope .

A pure sample of tritium,3H,was prepared and sealed in a container for a number of years.Tritium undergoes β\betaβ decay with a half-life of 12.32 years.How long has the container been sealed if analysis of the contents shows there are 5.25 mol of 3H and 6.35 mol of 3He present?

Fill in missing sub- and superscripts for all particles to complete the following equation for positron decay.

Briefly explain the relationship between the rad and the rem as units of radiation dosage.

The isotope Is unstable.This is predictable because

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids,solids,and Phase Changes

The Properties of Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Transition Elements and Their Coordination Compounds

Filters

Iodine-131,t_1/2 = 8.0 days,is used in diagnosis and treatment of thyroid gland diseases.If a laboratory sample of iodine-131 initially emits 9.95 $\times$ 10¹⁸ $\beta$ particles per day,how long will it take for the activity to drop to 6.22 $\times$ 10¹⁷ $\beta$ particles per day?

A certain isotope has a specific activity of 7.29 $\times$ 10^-4 Ci/g.How many $\alpha$ particles will a 75.0 mg sample emit in one hour?

A pure sample of tritium,³H,was prepared and sealed in a container for a number of years.Tritium undergoes $\beta$ decay with a half-life of 12.32 years.How long has the container been sealed if analysis of the contents shows there are 5.25 mol of ³H and 6.35 mol of ³He present?