Question 1

When ionizing radiation enters the body, what is the predominant free radical produced?

Accepted Answer

A) H 
B) H3O 
C) protein 
D) OH 
E) H2O 
A) H 
B) H3O 
C) protein 
D) OH 
E) H2O D

Question 2

The missing product in this reaction combines with oxygen to form a compound with the formula ________.   K →   e + _____

Accepted Answer

A) M2O 
B) MO 
C) MO2 
D) M2O3 
E) M3O2 
A) M2O 
B) MO 
C) MO2 
D) M2O3 
E) M3O2 B

Question 3

All atoms of a given element have the same ________.

Accepted Answer

A) mass number 
B) number of nucleons 
C) atomic mass 
D) number of neutrons 
E) atomic number 
A) mass number 
B) number of nucleons 
C) atomic mass 
D) number of neutrons 
E) atomic number E

Question 4

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

Accepted Answer

A) 2.74 × 10-19 
B) 9.12 × 10-28  
C) 4.94 × 10-13 
D) 8.20 × 10-11 
E) 2.74 × 10-16 
A) 2.74 × 10-19 
B) 9.12 × 10-28  
C) 4.94 × 10-13 
D) 8.20 × 10-11 
E) 2.74 × 10-16

Question 5

Electrons do not exist in the nucleus, yet beta emission is ejection of electrons from the nucleus. How does this happen?

Accepted Answer

A neutron breaks apart to prod

Question 6

This reaction is an example of ________.   P + _____ →   Si

Accepted Answer

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

Question 7

210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 7.50 g of 210Pb, how many grams of 206Hg will you have after 17.5 years?

Accepted Answer

A) 4.35 
B) 3.15 
C) 3.09 
D) 0.0600 
E) 1.71 
A) 4.35 
B) 3.15 
C) 3.09 
D) 0.0600 
E) 1.71

Question 8

In what type of radioactive decay does the atomic number of the product decrease by one?

Accepted Answer

A) positron emission 
B) corrosion 
C) alpha 
D) beta 
E) gamma 
A) positron emission 
B) corrosion 
C) alpha 
D) beta 
E) gamma

Question 9

The nuclear disintegration series of ________ is the source of radon-222 in soil.

Accepted Answer

A) "235U" 
B) "238U" 
C) "236Pb" 
D) "235Th" 
E) "14C" 
A) "235U" 
B) "238U" 
C) "236Pb" 
D) "235Th" 
E) "14C"

Question 10

High speed electrons emitted by an unstable nucleus are called ________.

Accepted Answer

The answer of High speed electrons emitted by an unstable...

Question 11

What isotope of what element is produced if krypton-81 undergoes beta decay?

Accepted Answer

The answer of What isotope of what element is produced...

Question 12

By what process does thorium-230 decay to radium-226?

Accepted Answer

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

Question 13

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy (in J)of a 62Co nucleus? (The mass of a cobalt-62 nucleus is 61.9341 amu.)

Accepted Answer

A) 8.46 × 10-11  J 
B) 8.46 × 10-19  J 
C) 5.09 × 1016  J 
D) 4.15 × 10-9  J 
E) -1.12 × 10-9  J 
A) 8.46 × 10-11  J 
B) 8.46 × 10-19  J 
C) 5.09 × 1016  J 
D) 4.15 × 10-9  J 
E) -1.12 × 10-9  J

Question 14

This reaction is an example of ________.   Po →   Pb + _____

Accepted Answer

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

Question 15

What is the predominant isotope of uranium?

Accepted Answer

The answer of What is the predominant isotope of uranium?...

Question 16

When two atoms of 2H are fused to form one atom of 4He, the total energy evolved is 3.83 × 10-12 J. What is the total change in mass (in kg)for this reaction? (c = 3.00 × 108 m/s)

Accepted Answer

A) 1.28 × 10-17 
B) 4.26 × 10-26 
C) 3.45 × 108 
D) 1.15 
E) 4.26 × 10-29 
A) 1.28 × 10-17 
B) 4.26 × 10-26 
C) 3.45 × 108 
D) 1.15 
E) 4.26 × 10-29

Question 17

The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg?

Accepted Answer

A) 46 
B) 32 
C) 3.2 
D) 50 
E) 52 
A) 46 
B) 32 
C) 3.2 
D) 50 
E) 52

Question 18

Which one of the following can be done to shorten the half-life of the radioactive decay of uranium-238?

Accepted Answer

A) freeze it 
B) heat it 
C) convert it to UF6 
D) oxidize it to the +2 oxidation state 
E) none of the above 
A) freeze it 
B) heat it 
C) convert it to UF6 
D) oxidize it to the +2 oxidation state 
E) none of the above

Question 19

The curie is a measure of the ________.

Accepted Answer

A) number of disintegrations per second of a radioactive substance 
B) total energy absorbed by an object exposed to a radioactive source 
C) lethal threshold for radiation exposure 
D) number of alpha particles emitted by exactly one gram of a radioactive substance 
E) None of the above is correct. 
A) number of disintegrations per second of a radioactive substance 
B) total energy absorbed by an object exposed to a radioactive source 
C) lethal threshold for radiation exposure 
D) number of alpha particles emitted by exactly one gram of a radioactive substance 
E) None of the above is correct.

Question 20

41Ca decays by electron capture. The product of this reaction undergoes alpha decay. What is the product of this second decay reaction?

Accepted Answer

A) Ti 
B) Ca 
C) Ar 
D) Cl 
E) Sc 
A) Ti 
B) Ca 
C) Ar 
D) Cl 
E) Sc

Exam 21: Nuclear Chemistry

When ionizing radiation enters the body, what is the predominant free radical produced?

The missing product in this reaction combines with oxygen to form a compound with the formula ________. K → e + _____

All atoms of a given element have the same ________.

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

Electrons do not exist in the nucleus, yet beta emission is ejection of electrons from the nucleus. How does this happen?

This reaction is an example of ________. P + _____ → Si

210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 7.50 g of 210Pb, how many grams of 206Hg will you have after 17.5 years?

In what type of radioactive decay does the atomic number of the product decrease by one?

The nuclear disintegration series of ________ is the source of radon-222 in soil.

High speed electrons emitted by an unstable nucleus are called ________.

What isotope of what element is produced if krypton-81 undergoes beta decay?

By what process does thorium-230 decay to radium-226?

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy (in J)of a 62Co nucleus? (The mass of a cobalt-62 nucleus is 61.9341 amu.)

This reaction is an example of ________. Po → Pb + _____

What is the predominant isotope of uranium?

When two atoms of 2H are fused to form one atom of 4He, the total energy evolved is 3.83 × 10-12 J. What is the total change in mass (in kg)for this reaction? (c = 3.00 × 108 m/s)

The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg?

Which one of the following can be done to shorten the half-life of the radioactive decay of uranium-238?

The curie is a measure of the ________.

41Ca decays by electron capture. The product of this reaction undergoes alpha decay. What is the product of this second decay reaction?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

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 missing product in this reaction combines with oxygen to form a compound with the formula ____. K → e + _

This reaction is an example of ____. P + _ → Si

²¹⁰Pb has a half-life of 22.3 years and decays to produce ²⁰⁶Hg. If you start with 7.50 g of ²¹⁰Pb, how many grams of ²⁰⁶Hg will you have after 17.5 years?

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy (in J)of a ⁶²Co nucleus? (The mass of a cobalt-62 nucleus is 61.9341 amu.)

This reaction is an example of ____. Po → Pb + _

When two atoms of ²H are fused to form one atom of ⁴He, the total energy evolved is 3.83 × 10^-1² J. What is the total change in mass (in kg)for this reaction? (c = 3.00 × 10⁸m/s)

⁴¹Ca decays by electron capture. The product of this reaction undergoes alpha decay. What is the product of this second decay reaction?