Question 1

Which of the following isotopes is most likely to be unstable?

Accepted Answer

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

Question 2

Palladium-107 undergoes $\beta$ decay (t1/2 = 6.5 $\times$ 105 yr)to form silver-107.How long will it take for 0.150 mol of silver-107 to form from 1.25 mol of palladium-107?

Accepted Answer

A) 2.0 $\times$ 107 y 
B) 1.4 $\times$ 107 y 
C) 1.2 $\times$ 106 y 
D) 8.3 $\times$ 105 y 
E) 1.2 $\times$ 105 y 
A) 2.0 $\times$ 107 y 
B) 1.4 $\times$ 107 y 
C) 1.2 $\times$ 106 y 
D) 8.3 $\times$ 105 y 
E) 1.2 $\times$ 105 y

Question 3

Which of the following isotopes is most likely to be unstable?

Accepted Answer

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

Question 4

No alpha decay is observed for isotopes of elements with Z < 83.

Accepted Answer

A) True 
 B)False

Question 5

Select the nuclide that completes the following nuclear reaction.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) None of these choices is correct. 
A) 
  
B) 
  
C) 
  
D) 
  
E) None of these choices is correct.

Question 6

Gamma rays are not deflected by an electric field.

Accepted Answer

A) True 
 B)False

Question 7

A patient's thyroid gland is to be exposed to an average of 5.5 µCi for 16 days as an ingested sample of iodine-131 decays.If the energy of the $\beta$ radiation is 9.7 $\times$ 10-14 J and the mass of the thyroid is 32.0 g,what is the dose received by the patient?

Accepted Answer

A) 0.027 rads 
B) 1.2 rads 
C) 37 rads 
D) 85 rads 
E) None of these choices is correct. 
A) 0.027 rads 
B) 1.2 rads 
C) 37 rads 
D) 85 rads 
E) None of these choices is correct.

Question 8

Sodium-21 will emit positrons each having an energy of 4.0 $\times$ 10-13 J.What is this energy in MeV?

Accepted Answer

A) 4.0 $\times$ 10-7 MeV 
B) 2.5 MeV 
C) 40 MeV 
D) 2.5 $\times$ 106 MeV 
E) None of these choices is correct. 
A) 4.0 $\times$ 10-7 MeV 
B) 2.5 MeV 
C) 40 MeV 
D) 2.5 $\times$ 106 MeV 
E) None of these choices is correct.

Question 9

The radiochemist,Will I.Glow,studied thorium-232 and found that 2.82 $\times$ 10-7 moles emitted 8.42 $\times$ 106 $\alpha$ particles in one year.What is the decay constant for thorium-232?

Accepted Answer

A) 3.35 $\times$ 10-14 yr-1 
B) 4.96 $\times$ 10-11 yr-1 
C) 1.40 $\times$ 1010 yr-1 
D) 2.99 $\times$ 1013 yr-1 
E) None of these choices is correct. 
A) 3.35 $\times$ 10-14 yr-1 
B) 4.96 $\times$ 10-11 yr-1 
C) 1.40 $\times$ 1010 yr-1 
D) 2.99 $\times$ 1013 yr-1 
E) None of these choices is correct.

Question 10

An isotope with a high value of N/Z will tend to decay through

Accepted Answer

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

Question 11

Gamma rays are high energy electrons.

Accepted Answer

A) True 
 B)False

Question 12

Select the nuclide that completes the following nuclear reaction.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) None of these choices is correct. 
A) 
  
B) 
  
C) 
  
D) 
  
E) None of these choices is correct.

Question 13

Write a complete,balanced equation to represent the alpha decay of radon-210.

Accepted Answer

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

Question 14

When an electron and its anti-particle,a positron,collide,they annihilate each other.Calculate the energy released in this process,in J.(The positron mass is the same as the electron mass,namely 9.11 $\times$ 10-31 kg. )

Accepted Answer

1.64 @#LAT-DLM& 10<s

Question 15

A 55-kg person exposed to thorium-234 receives 7.5 $\times$ 104 $\beta$ particles,each with an energy of 1.6 $\times$ 10-14 J.How many rads does the person receive?

Accepted Answer

A) 2.1 $\times$ 10-19 
B) 1.2 $\times$ 10-17 
C) 2.2 $\times$ 10-9 
D) 1.2 $\times$ 10-9 
E) None of these choices is correct. 
A) 2.1 $\times$ 10-19 
B) 1.2 $\times$ 10-17 
C) 2.2 $\times$ 10-9 
D) 1.2 $\times$ 10-9 
E) None of these choices is correct.

Which of the following isotopes is most likely to be unstable?

Palladium-107 undergoes $\beta$ decay (t_1/2 = 6.5 $\times$ 10⁵ yr)to form silver-107.How long will it take for 0.150 mol of silver-107 to form from 1.25 mol of palladium-107?

Which of the following isotopes is most likely to be unstable?

No alpha decay is observed for isotopes of elements with Z < 83.

Select the nuclide that completes the following nuclear reaction.

Gamma rays are not deflected by an electric field.

A patient's thyroid gland is to be exposed to an average of 5.5 µCi for 16 days as an ingested sample of iodine-131 decays.If the energy of the $\beta$ radiation is 9.7 $\times$ 10^-14 J and the mass of the thyroid is 32.0 g,what is the dose received by the patient?

Sodium-21 will emit positrons each having an energy of 4.0 $\times$ 10^-13 J.What is this energy in MeV?

The radiochemist,Will I.Glow,studied thorium-232 and found that 2.82 $\times$ 10^-7 moles emitted 8.42 $\times$ 10⁶ $\alpha$ particles in one year.What is the decay constant for thorium-232?

An isotope with a high value of N/Z will tend to decay through

Gamma rays are high energy electrons.

Select the nuclide that completes the following nuclear reaction.

Write a complete,balanced equation to represent the alpha decay of radon-210.

When an electron and its anti-particle,a positron,collide,they annihilate each other.Calculate the energy released in this process,in J.(The positron mass is the same as the electron mass,namely 9.11 $\times$ 10^-31 kg. )

A 55-kg person exposed to thorium-234 receives 7.5 $\times$ 10⁴ $\beta$ particles,each with an energy of 1.6 $\times$ 10^-14 J.How many rads does the person receive?

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

Exam 23: Nuclear Reactions and Their Applications

Which of the following isotopes is most likely to be unstable?

Palladium-107 undergoes β\betaβ decay (t1/2 = 6.5 ×\times× 105 yr)to form silver-107.How long will it take for 0.150 mol of silver-107 to form from 1.25 mol of palladium-107?

Which of the following isotopes is most likely to be unstable?

No alpha decay is observed for isotopes of elements with Z < 83.

Select the nuclide that completes the following nuclear reaction.

Gamma rays are not deflected by an electric field.

A patient's thyroid gland is to be exposed to an average of 5.5 µCi for 16 days as an ingested sample of iodine-131 decays.If the energy of the β\betaβ radiation is 9.7 ×\times× 10-14 J and the mass of the thyroid is 32.0 g,what is the dose received by the patient?

Sodium-21 will emit positrons each having an energy of 4.0 ×\times× 10-13 J.What is this energy in MeV?

The radiochemist,Will I.Glow,studied thorium-232 and found that 2.82 ×\times× 10-7 moles emitted 8.42 ×\times× 106 α\alphaα particles in one year.What is the decay constant for thorium-232?

An isotope with a high value of N/Z will tend to decay through

Gamma rays are high energy electrons.

Select the nuclide that completes the following nuclear reaction.

Write a complete,balanced equation to represent the alpha decay of radon-210.

When an electron and its anti-particle,a positron,collide,they annihilate each other.Calculate the energy released in this process,in J.(The positron mass is the same as the electron mass,namely 9.11 ×\times× 10-31 kg. )

A 55-kg person exposed to thorium-234 receives 7.5 ×\times× 104 β\betaβ particles,each with an energy of 1.6 ×\times× 10-14 J.How many rads does the person receive?

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

Palladium-107 undergoes $\beta$ decay (t_1/2 = 6.5 $\times$ 10⁵ yr)to form silver-107.How long will it take for 0.150 mol of silver-107 to form from 1.25 mol of palladium-107?

A patient's thyroid gland is to be exposed to an average of 5.5 µCi for 16 days as an ingested sample of iodine-131 decays.If the energy of the $\beta$ radiation is 9.7 $\times$ 10^-14 J and the mass of the thyroid is 32.0 g,what is the dose received by the patient?

Sodium-21 will emit positrons each having an energy of 4.0 $\times$ 10^-13 J.What is this energy in MeV?

The radiochemist,Will I.Glow,studied thorium-232 and found that 2.82 $\times$ 10^-7 moles emitted 8.42 $\times$ 10⁶ $\alpha$ particles in one year.What is the decay constant for thorium-232?

When an electron and its anti-particle,a positron,collide,they annihilate each other.Calculate the energy released in this process,in J.(The positron mass is the same as the electron mass,namely 9.11 $\times$ 10^-31 kg. )

A 55-kg person exposed to thorium-234 receives 7.5 $\times$ 10⁴ $\beta$ particles,each with an energy of 1.6 $\times$ 10^-14 J.How many rads does the person receive?