Question 1

What exposure level to radiation is fatal to most humans?

Accepted Answer

A)  100 rem 
B)  200 rem 
C)  600 rem 
D)  300 rem 
E)  1000 rem 
A)  100 rem 
B)  200 rem 
C)  600 rem 
D)  300 rem 
E)  1000 rem

Question 2

In the formula k=0.693/t1/2, k is the decay constant.

Accepted Answer

A) True 
 B)False

Question 3

The half- life of a radionuclide

Accepted Answer

A)  gets longer with passing time. 
B)  is constant. 
C)  gets longer with increased temperature. 
D)  gets shorter with passing time. 
E)  gets shorter with increased temperature. 
A)  gets longer with passing time. 
B)  is constant. 
C)  gets longer with increased temperature. 
D)  gets shorter with passing time. 
E)  gets shorter with increased temperature.

Question 4

This reaction is an example of .

Accepted Answer

A)  electron capture 
B)  gamma emission 
C)  positron emission 
D)  alpha decay 
E)  beta emission 
A)  electron capture 
B)  gamma emission 
C)  positron emission 
D)  alpha decay 
E)  beta emission

Question 5

If we start with 1.000 g of cobalt- 60, 0.675 g will remain after 3.00 yr. This means that the half- life of cobalt- 60 is _ _ yr.

Accepted Answer

A)  3.08 
B)  7.65 
C)  2.03 
D)  5.30 
E)  4.44 
A)  3.08 
B)  7.65 
C)  2.03 
D)  5.30 
E)  4.44

Question 6

What percentage of electricity generated in the U.S. is from commercial nuclear plants _
?

Accepted Answer

A)  1% 
B)  90% 
C)  10% 
D)  20% 
E)  50% 
A)  1% 
B)  90% 
C)  10% 
D)  20% 
E)  50%

Question 7

What is the half- life (in min) of this radionuclide?

Accepted Answer

A)  44.64 
B)  30.9 
C)  0.0324 
D)  0.0224 
E)  0.0242 
A)  44.64 
B)  30.9 
C)  0.0324 
D)  0.0224 
E)  0.0242

Question 8

What is the largest number of protons that can exist in a nucleus and still be stable ?

Accepted Answer

A)  83 
B)  92 
C)  50 
D)  206 
E)  84 
A)  83 
B)  92 
C)  50 
D)  206 
E)  84

Question 9

A freshly prepared sample of curium- 243 undergoes 3312 disintegrations per second. After 6.00 yr, the activity of the sample declines to 2755 disintegrations per second. The half- life of curium- 243 is   Yr.

Accepted Answer

A)  0.765 
B)  32.6 
C)  7.21 
D)  4.99 
E)  22.6 
A)  0.765 
B)  32.6 
C)  7.21 
D)  4.99 
E)  22.6

Question 10

Which one of the following requires a particle accelerator to occur?

Accepted Answer

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

Question 11

The alpha decay of what isotope of what element produces lead- 206?

Accepted Answer

A)  polonium- 210 
B)  polonium- 211 
A)  polonium- 210 
B)  polonium- 211

Question 12

The missing product from this reaction is

Accepted Answer

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

Question 13

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the mass defect (in amu) of a   nucleus? (The mass of a cobalt- 60 nucleus is 59.9338 amu.) .?

Accepted Answer

A)  0.0662 
B)  0.5405 
C)  27.7830 
D)  0.4827 
E)  0.5489 
A)  0.0662 
B)  0.5405 
C)  27.7830 
D)  0.4827 
E)  0.5489

Question 14

The three radioactive series that occur in nature end with what element ?

Accepted Answer

A)  U 
B)  Bi 
C)  Po 
D)  Hg 
E)  Pb 
A)  U 
B)  Bi 
C)  Po 
D)  Hg 
E)  Pb

Question 15

In the nuclear transmutation represented by  ?, what is the product?

Accepted Answer

A)  nitrogen- 16 
B)  carbon- 12 
C)  carbon- 14 
D)  carbon- 16 
E)  nitrogen- 15 
A)  nitrogen- 16 
B)  carbon- 12 
C)  carbon- 14 
D)  carbon- 16 
E)  nitrogen- 15

Question 16

Which one of the following forms of radiation can penetrate the deepest into body tissue?

Accepted Answer

A)  beta 
B)  proton 
C)  alpha 
D)  positron 
E)  gamma 
A)  beta 
B)  proton 
C)  alpha 
D)  positron 
E)  gamma

Question 17

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy per nucleon (in J) of a   nucleus? (The mass of a cobalt- 60 nucleus is 59.9338 amu.)

Accepted Answer

A)  7.009 × 10- 14 
B)  2.487 × 10- 12 
C)  1.368 × 10- 12 
D)  9.432 × 10- 13 
E)  3.039 × 10- 12 
A)  7.009 × 10- 14 
B)  2.487 × 10- 12 
C)  1.368 × 10- 12 
D)  9.432 × 10- 13 
E)  3.039 × 10- 12

Question 18

Which one of the following devices converts radioactive emissions to light for detection?

Accepted Answer

A)  photographic film 
B)  Geiger counter 
C)  scintillation counter 
D)  none of the above 
E)  radiotracer 
A)  photographic film 
B)  Geiger counter 
C)  scintillation counter 
D)  none of the above 
E)  radiotracer

Question 19

The main scientific difficulty in achieving a controlled fusion process is the

Accepted Answer

A)  enormous repulsion between the electrons of atoms being fused. 
B)  enormous repulsion between nuclei being fused. 
C)  very large number of gamma rays emitted. 
D)  very large number of x- rays emitted. 
E)  very large number of positrons emitted. 
A)  enormous repulsion between the electrons of atoms being fused. 
B)  enormous repulsion between nuclei being fused. 
C)  very large number of gamma rays emitted. 
D)  very large number of x- rays emitted. 
E)  very large number of positrons emitted.

Question 20

What is emitted in the nuclear transmutation, ?

Accepted Answer

A)  a gamma photon 
B)  a neutron 
C)  a proton 
D)  an alpha particle 
E)  a beta particle 
A)  a gamma photon 
B)  a neutron 
C)  a proton 
D)  an alpha particle 
E)  a beta particle

Exam 21: Nuclear Chemistry

What exposure level to radiation is fatal to most humans?

In the formula k=0.693/t1/2, k is the decay constant.

The half- life of a radionuclide

This reaction is an example of .

If we start with 1.000 g of cobalt- 60, 0.675 g will remain after 3.00 yr. This means that the half- life of cobalt- 60 is _ _ yr.

What percentage of electricity generated in the U.S. is from commercial nuclear plants _ ?

What is the half- life (in min) of this radionuclide?

What is the largest number of protons that can exist in a nucleus and still be stable ?

A freshly prepared sample of curium- 243 undergoes 3312 disintegrations per second. After 6.00 yr, the activity of the sample declines to 2755 disintegrations per second. The half- life of curium- 243 is Yr.

Which one of the following requires a particle accelerator to occur?

The alpha decay of what isotope of what element produces lead- 206?

The missing product from this reaction is

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the mass defect (in amu) of a nucleus? (The mass of a cobalt- 60 nucleus is 59.9338 amu.) .?

The three radioactive series that occur in nature end with what element ?

In the nuclear transmutation represented by ?, what is the product?

Which one of the following forms of radiation can penetrate the deepest into body tissue?

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy per nucleon (in J) of a nucleus? (The mass of a cobalt- 60 nucleus is 59.9338 amu.)

Which one of the following devices converts radioactive emissions to light for detection?

The main scientific difficulty in achieving a controlled fusion process is the

What is emitted in the nuclear transmutation,?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

In the formula k=0.693/t_1/2, k is the decay constant.