Question 1

A 30.0-kg child receives 2.65 × 107 F1F1F1S1F1F1F10 particles, each with an energy of 4.60 × 10-13 J. If the RBE = 0.78, how many millirem did the child receive?

Accepted Answer

A)  3.2 × 10-7 
B)  5.2 × 10-7 
C)  5.2 × 10-4 
D)  3.2 × 10-2 
E)  none of the above

Question 2

Most foodstuffs contain natural, radioactive isotopes.

Accepted Answer

A) True 
 B)False

Question 3

Which one of the following elements is formed largely in supernova explosions?

Accepted Answer

A)  H 
B)  He 
C)  Mg 
D)  Fe 
E)  U

Question 4

Identify the missing species in the following nuclear transmutation.

Accepted Answer

A)  2  
B)  3  
C)   
D)   
E)

Question 5

Palladium-107 undergoes F1F1F1S1F1F1F10 decay (t1/2 = 6.5 × 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 × 107 y 
B)  1.4 × 107 y 
C)  1.2 × 106 y 
D)  8.3 × 105 y 
E)  1.2 × 105 y

Question 6

Identify the missing species in the following nuclear transmutation.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 7

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

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 8

Identify the missing species in the following nuclear transmutation.

Accepted Answer

A)   
B)   
C)   
D)   
E)  none of the above

Question 9

Detection of radiation by a Geiger-Müller counter depends on

Accepted Answer

A)  the emission of a photon from an excited atom. 
B)  the ability of an ionized gas to carry an electrical current. 
C)  the emission of a photon of light by the radioactive particle. 
D)  the ability of a photomultiplier tube to amplify the electrical signal from a phosphor. 
E)  the detection of the sound made by decay particles.

Question 10

The isotope  has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of  , approximately how many of these atoms will remain after one week?

Accepted Answer

A)  1250 
B)  78 
C)  39 
D)  0 
E)  none of the above

Question 11

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

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 12

Who discovered radioactivity?

Accepted Answer

A)  Geiger 
B)  Curie 
C)  Roentgen 
D)  Becquerel 
E)  Rutherford

Question 13

What features do the r- and s-processes for element formation have in common? How do they differ?

Accepted Answer

The answer of What features do the r- and s-processes...

Question 14

Assuming that no other particles are produced, which of the following particles could be used to bombard nitrogen-14 in order to make fluorine-18?

Accepted Answer

A)  alpha particle 
B)  beta particle 
C)  neutron 
D)  proton 
E)  positron

Question 15

Bombardment of uranium-238 nuclei by carbon-12 nuclei produces californium-246 and neutrons. Write a complete, balanced equation for this nuclear process.

Accepted Answer

The answer of Bombardment of uranium-238 nuclei by carbon-12 nuclei...

Question 16

Select the nuclide that completes the following nuclear reaction.

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 17

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

Accepted Answer

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

Question 18

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

Question 19

A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium undergoes F1F1F1S1F1F1F10 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

Question 20

A scintillation counter

Accepted Answer

A)  measures the signal coming from an ionized gas. 
B)  measures light emissions from excited atoms. 
C)  depends on an avalanche of electrons generated as a particle moves through a tube of argon gas. 
D)  detects high energy radiation better than low energy radiation. 
E)  detects an electric current in a gas.

Exam 24: Nuclear Reactions and Their Applications

A 30.0-kg child receives 2.65 × 10⁷  particles, each with an energy of 4.60 × 10^-13 J. If the RBE = 0.78, how many millirem did the child receive?

Most foodstuffs contain natural, radioactive isotopes.

Which one of the following elements is formed largely in supernova explosions?

Identify the missing species in the following nuclear transmutation.

Palladium-107 undergoes  decay (t_1/2 = 6.5 × 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?

Identify the missing species in the following nuclear transmutation.

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

Identify the missing species in the following nuclear transmutation.

Detection of radiation by a Geiger-Müller counter depends on

The isotope has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of , approximately how many of these atoms will remain after one week?

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

Who discovered radioactivity?

What features do the r- and s-processes for element formation have in common? How do they differ?

Assuming that no other particles are produced, which of the following particles could be used to bombard nitrogen-14 in order to make fluorine-18?

Bombardment of uranium-238 nuclei by carbon-12 nuclei produces californium-246 and neutrons. Write a complete, balanced equation for this nuclear process.

Select the nuclide that completes the following nuclear reaction.

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

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

A pure sample of tritium, ³H, was prepared and sealed in a container for a number of years. Tritium undergoes  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?

A scintillation counter

Exam 24: Nuclear Reactions and Their Applications

A 30.0-kg child receives 2.65 × 107  particles, each with an energy of 4.60 × 10-13 J. If the RBE = 0.78, how many millirem did the child receive?

Most foodstuffs contain natural, radioactive isotopes.

Which one of the following elements is formed largely in supernova explosions?

Identify the missing species in the following nuclear transmutation.

Palladium-107 undergoes  decay (t1/2 = 6.5 × 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?

Identify the missing species in the following nuclear transmutation.

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

Identify the missing species in the following nuclear transmutation.

Detection of radiation by a Geiger-Müller counter depends on

The isotope has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of , approximately how many of these atoms will remain after one week?

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

Who discovered radioactivity?

What features do the r- and s-processes for element formation have in common? How do they differ?

Assuming that no other particles are produced, which of the following particles could be used to bombard nitrogen-14 in order to make fluorine-18?

Bombardment of uranium-238 nuclei by carbon-12 nuclei produces californium-246 and neutrons. Write a complete, balanced equation for this nuclear process.

Select the nuclide that completes the following nuclear reaction.

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

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

A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium undergoes  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?

A scintillation counter

A 30.0-kg child receives 2.65 × 10⁷  particles, each with an energy of 4.60 × 10^-13 J. If the RBE = 0.78, how many millirem did the child receive?

Palladium-107 undergoes  decay (t_1/2 = 6.5 × 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 pure sample of tritium, ³H, was prepared and sealed in a container for a number of years. Tritium undergoes  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?