Question 1

The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by alpha emission is ________.

Accepted Answer

A) .37S 
B) .41Ar 
C) .36S 
D) .45Ca 
E) .35Ar 
A) .37S 
B) .41Ar 
C) .36S 
D) .45Ca 
E) .35Ar A

Question 2

The half-life of a radionuclide ________.

Accepted Answer

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

Question 3

The amount of fissionable material necessary to maintain a chain reactions is called the ________.

Accepted Answer

critical mass

Question 4

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

Accepted Answer

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

Question 5

What is the missing product from this reaction?

Accepted Answer

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

Question 6

What is the mass number of a neutron?

Accepted Answer

A) 2 
B) 1 
C) 3 
D) 4 
E) 0 
A) 2 
B) 1 
C) 3 
D) 4 
E) 0

Question 7

What is the age in years of a mineral sample that has a mass ratio of 40Ar to 40K of 0.330? Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr.

Accepted Answer

A) 3.85 × 109 
B) 5.23 × 108 
C) 1.77 × 109 
D) 3.62 × 108 
E) 2.55 × 109 
A) 3.85 × 109 
B) 5.23 × 108 
C) 1.77 × 109 
D) 3.62 × 108 
E) 2.55 × 109

Question 8

Carbon-11,fluorine-18,oxygen-15 and nitrogen-13 are all used in the clinical diagnostic technique known as ________.

Accepted Answer

positron e

Question 9

Carbon-11 decays by positron emission.The decay occurs with a release of 2.87 × 1011 J per mole of carbon-11.What mass (g)is converted to energy when 5.00 g of   undergoes this radioactive decay?

Accepted Answer

A) 1.45 × 10-6 
B) 4.35 × 105 
C) 6.90 × 102 
D) 1.45 × 10-3 
E) 1.59 × 10-2 
A) 1.45 × 10-6 
B) 4.35 × 105 
C) 6.90 × 102 
D) 1.45 × 10-3 
E) 1.59 × 10-2

Question 10

A ________ is a highly reactive substance that contains one or more unpaired electrons.

Accepted Answer

A) cation 
B) free radical 
C) anion 
D) protein 
A) cation 
B) free radical 
C) anion 
D) protein

Question 11

The formation of krypton from rubidium decay is a result of ________.

Accepted Answer

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

Question 12

Of the following processes,which one changes the atomic number?

Accepted Answer

A) alpha emission 
B) beta emission 
C) electron capture 
D) positron emission 
E) All of these processes change the atomic numbers. 
A) alpha emission 
B) beta emission 
C) electron capture 
D) positron emission 
E) All of these processes change the atomic numbers.

Question 13

In terms of binding energy per nucleon,what element divides fission and fusion processes?

Accepted Answer

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

Question 14

What is the rate constant for the decay of some unknown radioactive compound if the half-life for the beta decay is 1.3 × 109 years?

Accepted Answer

Question 15

The conversion of matter to energy and mass loss occurs in ________ reactions?

Accepted Answer

The answer of The conversion of matter to energy and...

Question 16

The relative biological effectiveness (RBE)is tenfold greater for gamma radiation than for alpha radiation.

Accepted Answer

A) True 
 B)False

Question 17

________ discovered radioactivity.

Accepted Answer

The answer of ________ discovered radioactivity....

Question 18

What is the rate constant (in min-1)for the decay of this radionuclide?

Accepted Answer

A) 45 
B) 32 
C) 0.024 
D) 0.032 
E) 0.022 
A) 45 
B) 32 
C) 0.024 
D) 0.032 
E) 0.022

Question 19

The mass of a proton is 1.673 × 10-24 g.The mass of a neutron is 1.675 × 10-24 g.The mass of the nucleus of an 56Fe atom is 9.289 × 10-23 g.What is the nuclear binding energy (in J)for a 56Fe nucleus?

Accepted Answer

A) 2.57 × 10-16 
B) 7.72 × 10-8 
C) 8.36 × 10-9 
D) 7.72 × 10-11 
E) 6.07 × 106 
A) 2.57 × 10-16 
B) 7.72 × 10-8 
C) 8.36 × 10-9 
D) 7.72 × 10-11 
E) 6.07 × 106

Question 20

The major type of cancer caused by radiation is ________.

Accepted Answer

The answer of The major type of cancer caused by...

Exam 21: Nuclear Chemistry

The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by alpha emission is ________.

The half-life of a radionuclide ________.

The amount of fissionable material necessary to maintain a chain reactions is called the ________.

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

What is the missing product from this reaction?

What is the mass number of a neutron?

What is the age in years of a mineral sample that has a mass ratio of 40Ar to 40K of 0.330? Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr.

Carbon-11,fluorine-18,oxygen-15 and nitrogen-13 are all used in the clinical diagnostic technique known as ________.

Carbon-11 decays by positron emission.The decay occurs with a release of 2.87 × 1011 J per mole of carbon-11.What mass (g)is converted to energy when 5.00 g of undergoes this radioactive decay?

A ________ is a highly reactive substance that contains one or more unpaired electrons.

The formation of krypton from rubidium decay is a result of ________.

Of the following processes,which one changes the atomic number?

In terms of binding energy per nucleon,what element divides fission and fusion processes?

What is the rate constant for the decay of some unknown radioactive compound if the half-life for the beta decay is 1.3 × 109 years?

The conversion of matter to energy and mass loss occurs in ________ reactions?

The relative biological effectiveness (RBE)is tenfold greater for gamma radiation than for alpha radiation.

________ discovered radioactivity.

What is the rate constant (in min-1)for the decay of this radionuclide?

The mass of a proton is 1.673 × 10-24 g.The mass of a neutron is 1.675 × 10-24 g.The mass of the nucleus of an 56Fe atom is 9.289 × 10-23 g.What is the nuclear binding energy (in J)for a 56Fe nucleus?

The major type of cancer caused by radiation is ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The product of the nuclear reaction in which ⁴⁰Ar is subjected to neutron capture followed by alpha emission is ________.

What is the age in years of a mineral sample that has a mass ratio of ⁴⁰Ar to ⁴⁰K of 0.330? Potassium-40 decays to argon-40 with a half-life of 1.27 × 10⁹ yr.

Carbon-11 decays by positron emission.The decay occurs with a release of 2.87 × 10¹¹ J per mole of carbon-11.What mass (g)is converted to energy when 5.00 g of undergoes this radioactive decay?

What is the rate constant for the decay of some unknown radioactive compound if the half-life for the beta decay is 1.3 × 10⁹ years?

What is the rate constant (in min^-1)for the decay of this radionuclide?

The mass of a proton is 1.673 × 10^-24 g.The mass of a neutron is 1.675 × 10^-24g.The mass of the nucleus of an ⁵⁶Fe atom is 9.289 × 10^-23 g.What is the nuclear binding energy (in J)for a ⁵⁶Fe nucleus?