Question 1

How many neutrons are emitted when a californium-249 nucleus (Z=98)is bombarded with a carbon-12 nucleus to produce a 
  nucleus?

Accepted Answer

A) one 
B) three 
C) two 
D) four 
E) zero 
A) one 
B) three 
C) two 
D) four 
E) zero

Question 2

The half-life of carbon-11 is 20.3 minutes.How much of a 100.0 mg sample remains after 1.50 hours?

Accepted Answer

A) 8.48 mg 
B) 4.63 mg 
C) 12.9 mg 
D) 22.6 mg 
E) 7.70 mg 
A) 8.48 mg 
B) 4.63 mg 
C) 12.9 mg 
D) 22.6 mg 
E) 7.70 mg

Question 3

Control rods in a nuclear reactor are composed of boron and ________.

Accepted Answer

an alloy o

Question 4

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

Question 5

What happens to the mass number and the atomic number of an element when it emits gamma radiation?

Accepted Answer

A) The mass number remains unchanged while the atomic number decreases by one. 
B) The mass number decreases by four and the atomic number decreases by two. 
C) The mass number increases by four and the atomic number increases by two. 
D) The mass number remains unchanged while the atomic number increases by one. 
E) The mass number and atomic numbers remain unchanged. 
A) The mass number remains unchanged while the atomic number decreases by one. 
B) The mass number decreases by four and the atomic number decreases by two. 
C) The mass number increases by four and the atomic number increases by two. 
D) The mass number remains unchanged while the atomic number increases by one. 
E) The mass number and atomic numbers remain unchanged.

Question 6

The missing product from this reaction is ________.

Accepted Answer

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

Question 7

This reaction is an example of ________.

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 8

The first nuclear transmutation resulted in the conversion of nitrogen-14 to ________.

Accepted Answer

The answer of The first nuclear transmutation resulted in the...

Question 9

What type of reaction is known as a thermonuclear reaction?

Accepted Answer

A) fission 
B) fusion 
C) transmutation 
D) beta emission 
E) neutron emission 
A) fission 
B) fusion 
C) transmutation 
D) beta emission 
E) neutron emission

Question 10

The energy produced by the sun is the result of nuclear fusion.

Accepted Answer

A) True 
 B)False

Question 11

What is the identity of element E in the nuclear reaction   C → E +   e?

Accepted Answer

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

Question 12

The missing product from this reaction is ________.

Accepted Answer

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

Question 13

The half-life of 222Rn is 3.80 days.If a sample contains 36.0 g of Rn-222,how many years will it take for the sample to be reduced to 1.00 mg of Rn-222?

Accepted Answer

A) 19.7 
B) 0.1575 
C) 8.53 
D) 0.0234 
E) none of the above 
A) 19.7 
B) 0.1575 
C) 8.53 
D) 0.0234 
E) none of the above

Question 14

How much energy (in J)is produced when 0.067 g of matter is converted to energy?

Accepted Answer

A) 6.0 ×   
B) 6.0 ×   
C) 2.0 ×   
D) 6.0 ×   
E) 2.0 ×   
A) 6.0 ×   
B) 6.0 ×   
C) 2.0 ×   
D) 6.0 ×   
E) 2.0 ×

Question 15

Cesium-131 has a half-life of 9.7 days.What percent of a cesium-131 sample remains after 60 days?

Accepted Answer

A) 100 
B) 0 
C) 1.4 
D) 98.6 
E) more information is needed to solve the problem 
A) 100 
B) 0 
C) 1.4 
D) 98.6 
E) more information is needed to solve the problem

Question 16

The missing product from this reaction is ________.

Accepted Answer

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

Question 17

What is the mass defect (in amu)of a   Ni nucleus if the nuclear mass is 59.9308 amu? The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu.

Accepted Answer

A) 0.5449 
B) 0.5505 
C) 1.2374 
D) 1.3066 
E) 28.7930 
A) 0.5449 
B) 0.5505 
C) 1.2374 
D) 1.3066 
E) 28.7930

Question 18

The use of radioisotopes in tracing metabolism is possible because ________.

Accepted Answer

all isotopes of an e

Question 19

Cobalt-60 is produced by a three reaction process involving neutron capture,beta-emission,and neutron capture.The initial reactant in the production of cobalt-60 is ________.

Accepted Answer

A) .59Co 
B) .56Fe 
C) .58Fe 
D) .61Co 
E) .60Fe 
A) .59Co 
B) .56Fe 
C) .58Fe 
D) .61Co 
E) .60Fe

Question 20

What percentage of a radioactive sample remains after 175.0 yr if it has a   of 28.8 years?

Accepted Answer

A) 84.8 
B) 0.230 
C) 16.5 
D) 6.08 
E) 1.48 
A) 84.8 
B) 0.230 
C) 16.5 
D) 6.08 
E) 1.48

Exam 21: Nuclear Chemistry

How many neutrons are emitted when a californium-249 nucleus (Z=98)is bombarded with a carbon-12 nucleus to produce a nucleus?

The half-life of carbon-11 is 20.3 minutes.How much of a 100.0 mg sample remains after 1.50 hours?

Control rods in a nuclear reactor are composed of boron and ________.

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

What happens to the mass number and the atomic number of an element when it emits gamma radiation?

The missing product from this reaction is ________.

This reaction is an example of ________.

The first nuclear transmutation resulted in the conversion of nitrogen-14 to ________.

What type of reaction is known as a thermonuclear reaction?

The energy produced by the sun is the result of nuclear fusion.

What is the identity of element E in the nuclear reaction C → E + e?

The missing product from this reaction is ________.

The half-life of 222Rn is 3.80 days.If a sample contains 36.0 g of Rn-222,how many years will it take for the sample to be reduced to 1.00 mg of Rn-222?

How much energy (in J)is produced when 0.067 g of matter is converted to energy?

Cesium-131 has a half-life of 9.7 days.What percent of a cesium-131 sample remains after 60 days?

The missing product from this reaction is ________.

What is the mass defect (in amu)of a Ni nucleus if the nuclear mass is 59.9308 amu? The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu.

The use of radioisotopes in tracing metabolism is possible because ________.

Cobalt-60 is produced by a three reaction process involving neutron capture,beta-emission,and neutron capture.The initial reactant in the production of cobalt-60 is ________.

What percentage of a radioactive sample remains after 175.0 yr if it has a of 28.8 years?

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 half-life of ²²²Rn is 3.80 days.If a sample contains 36.0 g of Rn-222,how many years will it take for the sample to be reduced to 1.00 mg of Rn-222?