Question 1

A plot of the number of neutrons versus the number of protons in various isotopes produces a "belt of stability." Isotopes below the belt of stability (i.e.,with a smaller neutron-to-proton ratio)decay by beta particle emission.

Accepted Answer

A) True 
 B)False

Question 2

What are magic numbers with reference to nuclear stability?

Accepted Answer

A)  The number of nuclear particles of elements not located in the belt of stability
B)  The number of nuclear particles of radioactive elements
C)  The number of nuclear particles in generally more stable nuclei
D)  None of theE) C) and D)
F) B) and C)

Question 3

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

Accepted Answer

A)  α decay.
B)  β decay.
C)  positron decay.
D)  electron capture.
E)  γ decay.F) All of the above
G) A) and E)

Question 4

Petroleum is a fossil fuel containing many different carbon compounds.If the carbon atoms in petroleum have been in the ground for 100 million years,what fraction of the initial 14C atoms is still there? (t1/2 = 5730 yr)

Accepted Answer

A)  0
B)  1 × 10-10
C)  5.7 × 10-5
D)  1.0 × 10-3
E)  5.7 × 10-1F) B) and E)
G) All of the above

Question 5

When a87 Br nucleus emits a beta particle,what is the nuclear species that results?

Accepted Answer

Question 6

Which of the following type(s) of radiation is/are detected by a Geiger counter?

Accepted Answer

A)  Beta particles
B)  Alpha particles
C)  Gamma rays
D)  Beta particles and gamma rays
E)  Alpha particles,beta particles,and gamma raysF) A) and D)
G) All of the above

Question 7

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)  ChlorineF) A) and B)
G) B) and D)

Question 8

Which of the following is injected into the bloodstream to trace the flow of blood and detect possible constrictions or obstructions in the circulatory system?

Accepted Answer

A)  (18O) 
B)  (131I) 
C)  (123I) 
D)  (24Na) 
E)  (99Tc) F) B) and E)
G) A) and B)

Question 9

The _______________ has the same mass as the electron,but bears a charge of +1.

Accepted Answer

The answer of The _______________ has the same mass as...

Question 10

It is believed that two carbon-12 nuclei can react in the core of a supergiant star to form sodium-23 and hydrogen-1.Calculate the energy released from this reaction for each mole of hydrogen formed. 26 amu; NA = 6.022 × 1023 mol-1; C = 2.99792458 × 108 m/s)  A) 2.16 × 1014 kJ B) 2.16 × 1011 kJ C) 2.16 × 108 kJ D) 2.16 × 105 kJ E) None of the answers is correct." class="answers-bank-image d-inline" rel="preload" > Particle Mass (amu)  C-12 12.000000
Na-23 22.989767
H-1 1.007825
(1 kg = 6.022 × 1026 amu;
NA = 6.022 × 1023 mol-1;
C = 2.99792458 × 108 m/s)

Accepted Answer

A)  2.16 × 1014 kJ
B)  2.16 × 1011 kJ
C)  2.16 × 108 kJ
D)  2.16 × 105 kJ
E)  None of the answers is correct.F) A) and C)
G) A) and E)

Question 11

What is the name given to the nuclear process that results from the bombardment of nuclei by neutrons,protons,or other nuclei?

Accepted Answer

A)  Nuclear transmutation
B)  Protonation
C)  Nucleation
D)  Nuclear condensation
E)  RadioactivityF) A) and D)
G) C) and D)

Question 12

Which of the following best represents the relationship between the energy released (ΔE) and the mass defect (Δm) ?

Accepted Answer

A)   
B)   
C)   
D)   E) None of the above
F) A) and B)

Question 13

When atoms of aluminum-27 are bombarded with alpha particles,a neutron and an element are produced.Which particular isotope of this element is formed?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and B)
G) B) and C)

Question 14

Suppose you have two very sensitive balances that can measure the masses of individual particles,depicted below.In these figures,"p" corresponds to a proton,and "n" corresponds to a neutron.   What is the relationship between the mass readings of the two balances? (Neglect differences due to experimental uncertainty.)

Accepted Answer

A)  The mass reading of balance 1 will be much higher than the mass reading of balance 2.
B)  The mass reading of balance 1 will be slightly higher than the mass reading of balance 2.
C)  The mass reading of balance 1 will be exactly the same as the mass reading of balance 2.
D)  The mass reading of balance 1 will be slightly lower than the mass reading of balance 2.
E)  The mass reading of balance 1 will be much lower than the mass reading of balance 2.F) A) and D)
G) B) and C)

Question 15

Sodium-21 will emit positrons,each having an energy of 4.0 × 10-13 J.What is this energy in MeV? (1 MeV = 1.602 × 10-13 J)

Accepted Answer

A)  4.0 × 10-7 MeV
B)  2.5 MeV
C)  40 MeV
D)  2.5 × 106 MeV
E)  2.5 × 10-6 MeVF) B) and C)
G) A) and E)

Question 16

Gamma rays are not deflected by an electric field.

Accepted Answer

A) True 
 B)False

Question 17

What is the nuclear process called in which a heavy nuclear of mass number greater than 200 divides to form smaller nuclei of intermediate mass and one or more neutron(s) ?

Accepted Answer

A)  Photonuclear reactions
B)  Nuclear fission
C)  Thermal conductivity
D)  Nuclear combination
E)  Nuclear fusionF) B) and E)
G) A) and E)

Question 18

Which type of nuclear process requires an extremely high temperature (millions of degrees) ?

Accepted Answer

A)  Beta decay
B)  Fission reaction
C)  Fusion reaction
D)  Alpha decay
E)  Positron emissionF) B) and E)
G) A) and D)

Question 19

An 85-kg person exposed to barium-141 receives 2.5 × 105 β particles,each with an energy of 5.2 × 10-13 J.How many rads does the person receive? (1 rad = 1 × 10-5 J/g)

Accepted Answer

A)  2.4 × 10-20 rads
B)  1.5 × 10-7 rads
C)  1.8 × 10-16 rads
D)  6.1 × 10-15 rads
E)  None of the answers is correct.F) B) and C)
G) C) and D)

Question 20

What technique would you use to determine how old a cloth is that was found while digging in Egypt?

Accepted Answer

The answer of What technique would you use to determine...

Exam 20: Nuclear Chemistry

Which type of nuclear process requires an extremely high temperature (millions of degrees) ?

Correct Answer
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What are magic numbers with reference to nuclear stability?

Correct Answer
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Correct Answer
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Which of the following type(s) of radiation is/are detected by a Geiger counter?

Correct Answer
verified

Gamma rays are not deflected by an electric field.

Correct Answer
verified

Correct Answer
verified

What is the nuclear process called in which a heavy nuclear of mass number greater than 200 divides to form smaller nuclei of intermediate mass and one or more neutron(s) ?

Correct Answer
verified

What technique would you use to determine how old a cloth is that was found while digging in Egypt?

Correct Answer
verified

Which of the following is injected into the bloodstream to trace the flow of blood and detect possible constrictions or obstructions in the circulatory system?

Correct Answer
verified

When a⁸⁷ Br nucleus emits a beta particle,what is the nuclear species that results?

Correct Answer
verified

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

Correct Answer
verified

An 85-kg person exposed to barium-141 receives 2.5 × 10⁵ β particles,each with an energy of 5.2 × 10^-1³ J.How many rads does the person receive? (1 rad = 1 × 10^-5 J/g)

Correct Answer
verified

Which of the following best represents the relationship between the energy released (ΔE) and the mass defect (Δm) ?

Correct Answer
verified

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

Correct Answer
verified

When atoms of aluminum-27 are bombarded with alpha particles,a neutron and an element are produced.Which particular isotope of this element is formed?

Correct Answer
verified

What is the name given to the nuclear process that results from the bombardment of nuclei by neutrons,protons,or other nuclei?

Correct Answer
verified

A plot of the number of neutrons versus the number of protons in various isotopes produces a "belt of stability." Isotopes below the belt of stability (i.e.,with a smaller neutron-to-proton ratio)decay by beta particle emission.

Correct Answer
verified

Petroleum is a fossil fuel containing many different carbon compounds.If the carbon atoms in petroleum have been in the ground for 100 million years,what fraction of the initial ¹⁴C atoms is still there? (t_1/2 = 5730 yr)

Correct Answer
verified

Sodium-21 will emit positrons,each having an energy of 4.0 × 10^-13 J.What is this energy in MeV? (1 MeV = 1.602 × 10^-13 J)

Correct Answer
verified

The _______________ has the same mass as the electron,but bears a charge of +1.

Correct Answer
verified

Exam 20: Nuclear Chemistry

Which type of nuclear process requires an extremely high temperature (millions of degrees) ?

Correct AnswerverifiedShow Answer

What are magic numbers with reference to nuclear stability?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following type(s) of radiation is/are detected by a Geiger counter?

Correct AnswerverifiedShow Answer

Gamma rays are not deflected by an electric field.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is the nuclear process called in which a heavy nuclear of mass number greater than 200 divides to form smaller nuclei of intermediate mass and one or more neutron(s) ?

Correct AnswerverifiedShow Answer

What technique would you use to determine how old a cloth is that was found while digging in Egypt?

Correct AnswerverifiedShow Answer

Which of the following is injected into the bloodstream to trace the flow of blood and detect possible constrictions or obstructions in the circulatory system?

Correct AnswerverifiedShow Answer

When a87 Br nucleus emits a beta particle,what is the nuclear species that results?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An 85-kg person exposed to barium-141 receives 2.5 × 105 β particles,each with an energy of 5.2 × 10-13 J.How many rads does the person receive? (1 rad = 1 × 10-5 J/g)

Correct AnswerverifiedShow Answer

Which of the following best represents the relationship between the energy released (ΔE) and the mass defect (Δm) ?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When atoms of aluminum-27 are bombarded with alpha particles,a neutron and an element are produced.Which particular isotope of this element is formed?

Correct AnswerverifiedShow Answer

What is the name given to the nuclear process that results from the bombardment of nuclei by neutrons,protons,or other nuclei?

Correct AnswerverifiedShow Answer

A plot of the number of neutrons versus the number of protons in various isotopes produces a "belt of stability." Isotopes below the belt of stability (i.e.,with a smaller neutron-to-proton ratio)decay by beta particle emission.

Correct AnswerverifiedShow Answer

Petroleum is a fossil fuel containing many different carbon compounds.If the carbon atoms in petroleum have been in the ground for 100 million years,what fraction of the initial 14C atoms is still there? (t1/2 = 5730 yr)

Correct AnswerverifiedShow Answer

Sodium-21 will emit positrons,each having an energy of 4.0 × 10-13 J.What is this energy in MeV? (1 MeV = 1.602 × 10-13 J)

Correct AnswerverifiedShow Answer

The _______________ has the same mass as the electron,but bears a charge of +1.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

When a⁸⁷ Br nucleus emits a beta particle,what is the nuclear species that results?

Correct Answer
verified

Correct Answer
verified

An 85-kg person exposed to barium-141 receives 2.5 × 10⁵ β particles,each with an energy of 5.2 × 10^-1³ J.How many rads does the person receive? (1 rad = 1 × 10^-5 J/g)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Petroleum is a fossil fuel containing many different carbon compounds.If the carbon atoms in petroleum have been in the ground for 100 million years,what fraction of the initial ¹⁴C atoms is still there? (t_1/2 = 5730 yr)

Correct Answer
verified

Sodium-21 will emit positrons,each having an energy of 4.0 × 10^-13 J.What is this energy in MeV? (1 MeV = 1.602 × 10^-13 J)

Correct Answer
verified

Correct Answer
verified