Question 1

The missing reactant in the nuclear reaction ? →   N +   e is ________.

Accepted Answer

The answer of The missing reactant in the nuclear reaction...

Question 2

U undergoes alpha decay producing one alpha particle and a single nuclide.To balance the equation ________ and ________ must be added to the right side of the equation below.   U → ? + ?

Accepted Answer

The answer of   U undergoes alpha decay producing...

Question 3

A binding energy curve is a plot of binding energy per nucleon versus atomic number.In what region of the binding energy curve are the most stable elements found?

Accepted Answer

A) in the lower left region (low atomic mass) 
B) in the central top region (moderate atomic mass) 
C) in the lower right region (heavy atomic mass) 
D) binding energy is not dependent on atomic mass 
A) in the lower left region (low atomic mass) 
B) in the central top region (moderate atomic mass) 
C) in the lower right region (heavy atomic mass) 
D) binding energy is not dependent on atomic mass

Question 4

Which is more dangerous in terms of short-lived exposure to radiation? One mole of

Accepted Answer

A) .S1U1P183S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 1.35 days. 
B) .S1U1P190S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 28.5 years. 
C) .S1U1P180S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 1.77 hours. 
D) .S1U1P194S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 74 seconds. 
A) .S1U1P183S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 1.35 days. 
B) .S1U1P190S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 28.5 years. 
C) .S1U1P180S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 1.77 hours. 
D) .S1U1P194S1S1P0Sr,?S1U1P1-S1S1P0,tS1U1B11/2S1U1B0 = 74 seconds.

Question 5

A becquerel is

Accepted Answer

A) the amount of sample that undergoes 1 disintegration per second. 
B) the amount of sample that undergoes 3.7 × 1010 disintegrations per second. 
C) the amount of tissue damage done by radiation. 
D) equal to 0.01 J of energy absorbed per kilogram of tissue. 
A) the amount of sample that undergoes 1 disintegration per second. 
B) the amount of sample that undergoes 3.7 × 1010 disintegrations per second. 
C) the amount of tissue damage done by radiation. 
D) equal to 0.01 J of energy absorbed per kilogram of tissue.

Question 6

What is the binding energy (kJ/mol)for an element that has a mass defect of 3.33 × 10-26 g? Remember that the unit for a joule is kg m-2 s-2.

Accepted Answer

A) 6.02 × 103 kJ/mole 
B) 6.02 × 1012 kJ/mole 
C) 1.80 × 109 kJ/mole 
D) 5.41 × 1014 kJ/mole 
A) 6.02 × 103 kJ/mole 
B) 6.02 × 1012 kJ/mole 
C) 1.80 × 109 kJ/mole 
D) 5.41 × 1014 kJ/mole

Question 7

An average person receives 40 mrem of radiation from medical procedures annually.If a dose as low as 25 rem can lead to a decrease in white blood cell count,what is the maximum number of medical procedures that involve radiation allowable before white blood cell count decrease occurs?

Accepted Answer

The answer of An average person receives 40 mrem of...

Question 8

Which of the following figures represents the beta decay of   Mg to give   Al after one half-life has passed? Unshaded spheres represent   Mg atoms and shaded spheres represent   Al atoms.

Accepted Answer

A) figure (1) 
B) figure (2) 
C) figure (3) 
D) figure (4) 
A) figure (1) 
B) figure (2) 
C) figure (3) 
D) figure (4)

Question 9

Which reaction below represents   Th decay by alpha emission?

Accepted Answer

A)   
Th →
  
He +
  
Ra 
B)   
Th →
  
He +
  
Ra 
C)   
Th →
  
P +
  
Ac 
D)   
Th →
  
N +
  
Th 
A)   
Th →
  
He +
  
Ra 
B)   
Th →
  
He +
  
Ra 
C)   
Th →
  
P +
  
Ac 
D)   
Th →
  
N +
  
Th

Question 10

Which type of radiation is not used for medical applications?

Accepted Answer

A) alpha emission 
B) beta emission 
C) gamma radiation 
D) positron emission 
A) alpha emission 
B) beta emission 
C) gamma radiation 
D) positron emission

Question 11

C decays by beta emission to give   N.If unshaded spheres represent   C atoms and shaded spheres represent   N atoms,how many half-lives have passed in the following example?

Accepted Answer

A) 1 half-life 
B) 2 half-lives 
C) 3 half-lives 
D) 4 half-lives 
A) 1 half-life 
B) 2 half-lives 
C) 3 half-lives 
D) 4 half-lives

Question 12

Four heavy elements (A, B, C, and D) will fission when bombarded by neutrons. In addition to fissioning into two smaller elements, A also gives off a beta particle, B gives off gamma rays, C gives off neutrons, and D gives off alpha particles. Which element would make a possible fuel for a nuclear reactor?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 13

In addition to a beta particle,what is the other product of beta decay of   I?

Accepted Answer

A)   
Sb 
B)   
Te 
C)   
Xe 
D)   
Cs 
A)   
Sb 
B)   
Te 
C)   
Xe 
D)   
Cs

Question 14

The mass defect for the chemical reaction shown below is ________ g.
2 F → F2 E = -159 kJ/mol

Accepted Answer

Question 15

An alpha particle is

Accepted Answer

A)   
H+. 
B)   
H+. 
C)   
H+. 
D)   
He2+. 
A)   
H+. 
B)   
H+. 
C)   
H+. 
D)   
He2+.

Question 16

An experiment with 55Co takes 47.5 hours.At the end of the experiment,1.90 ng of 55Co remains.If the half life is 18.0 hours,how many ng of 55Co were originally present?

Accepted Answer

A) 2.47 ng 
B) 3.05 ng 
C) 3.28 ng 
D) 11.8 ng 
A) 2.47 ng 
B) 3.05 ng 
C) 3.28 ng 
D) 11.8 ng

Question 17

The nuclear decay process that involves the particle having the greatest mass is ________ emission.

Accepted Answer

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

Question 18

A shorthand way of writing transmutation equations is to show the bombarding particle and the subsequent emitted particle in parentheses.Which particle is produced by      Li (p,α)?

Accepted Answer

A)   
H 
B)   
He 
C)   
Be 
D)   
He 
A)   
H 
B)   
He 
C)   
Be 
D)   
He

Question 19

Breaking a chemical bond requires approximately 102 kJ/mol of energy.What is closest to the order of magnitude of the energy required to split a nucleus in to its individual protons and neutrons?

Accepted Answer

A) 103 kJ/mol 
B) 104 kJ/mol 
C) 108 kJ/mol 
D) 1010 kJ/mol 
A) 103 kJ/mol 
B) 104 kJ/mol 
C) 108 kJ/mol 
D) 1010 kJ/mol

Question 20

Which ionizing radiation has the greatest energy?

Accepted Answer

A) α 
B) β 
C) γ 
D) χ 
A) α 
B) β 
C) γ 
D) χ

Exam 19: Nuclear Chemistry

The missing reactant in the nuclear reaction ? → N + e is ________.

U undergoes alpha decay producing one alpha particle and a single nuclide.To balance the equation ________ and ________ must be added to the right side of the equation below. U → ? + ?

A binding energy curve is a plot of binding energy per nucleon versus atomic number.In what region of the binding energy curve are the most stable elements found?

Which is more dangerous in terms of short-lived exposure to radiation? One mole of

A becquerel is

What is the binding energy (kJ/mol)for an element that has a mass defect of 3.33 × 10-26 g? Remember that the unit for a joule is kg m-2 s-2.

An average person receives 40 mrem of radiation from medical procedures annually.If a dose as low as 25 rem can lead to a decrease in white blood cell count,what is the maximum number of medical procedures that involve radiation allowable before white blood cell count decrease occurs?

Which of the following figures represents the beta decay of Mg to give Al after one half-life has passed? Unshaded spheres represent Mg atoms and shaded spheres represent Al atoms.

Which reaction below represents Th decay by alpha emission?

Which type of radiation is not used for medical applications?

C decays by beta emission to give N.If unshaded spheres represent C atoms and shaded spheres represent N atoms,how many half-lives have passed in the following example?

In addition to a beta particle,what is the other product of beta decay of I?

The mass defect for the chemical reaction shown below is ________ g. 2 F → F2 E = -159 kJ/mol

An alpha particle is

An experiment with 55Co takes 47.5 hours.At the end of the experiment,1.90 ng of 55Co remains.If the half life is 18.0 hours,how many ng of 55Co were originally present?

The nuclear decay process that involves the particle having the greatest mass is ________ emission.

A shorthand way of writing transmutation equations is to show the bombarding particle and the subsequent emitted particle in parentheses.Which particle is produced by Li (p,α)?

Breaking a chemical bond requires approximately 102 kJ/mol of energy.What is closest to the order of magnitude of the energy required to split a nucleus in to its individual protons and neutrons?

Which ionizing radiation has the greatest energy?

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U undergoes alpha decay producing one alpha particle and a single nuclide.To balance the equation and must be added to the right side of the equation below. U → ? + ?

What is the binding energy (kJ/mol)for an element that has a mass defect of 3.33 × 10^-26 g? Remember that the unit for a joule is kg m^-2 s^-2.

The mass defect for the chemical reaction shown below is ________ g. 2 F → F₂ E = -159 kJ/mol

An experiment with ⁵⁵Co takes 47.5 hours.At the end of the experiment,1.90 ng of ⁵⁵Co remains.If the half life is 18.0 hours,how many ng of ⁵⁵Co were originally present?

Breaking a chemical bond requires approximately 10² kJ/mol of energy.What is closest to the order of magnitude of the energy required to split a nucleus in to its individual protons and neutrons?