Question 1

List the common particles and their symbols used in descriptions of radioactive decay and nuclear transformations.

Accepted Answer

The answer of List the common particles and their symbols...

Question 2

The reaction shown below is responsible for creating 14C in the atmosphere. What is the bombarding particle?   N + _____ →   C +   H

Accepted Answer

A) alpha particle 
B) electron 
C) neutron 
D) positron 
E) proton 
A) alpha particle 
B) electron 
C) neutron 
D) positron 
E) proton

Question 3

What happens in the nucleus of an atom that undergoes positron emission?

Accepted Answer

A proton is converte

Question 4

In balancing the nuclear reaction   U →   E +   He, the identity of element E is ________.

Accepted Answer

A) Pu 
B) Np 
C) U 
D) Pa 
E) Th 
A) Pu 
B) Np 
C) U 
D) Pa 
E) Th

Question 5

The SI unit of an absorbed dose of radiation is the gray.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

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

Question 7

The half-life of carbon-11 is 20.3 minutes. How much of a 100.0 mg sample remains after 1.6 hours?

Accepted Answer

A) 3.77 mg 
B) 0.0377 mg 
C) 94.7 mg 
D) 1.75 × 10-89 mg 
E) 99.9 mg 
A) 3.77 mg 
B) 0.0377 mg 
C) 94.7 mg 
D) 1.75 × 10-89 mg 
E) 99.9 mg

Question 8

Alpha decay produces a new nucleus whose ________ than those respectively of the original nucleus.

Accepted Answer

A) atomic number is 2 less and mass number is 2 less 
B) atomic number is 1 less and mass number is 2 less 
C) atomic number is 2 less and mass number is 4 less 
D) atomic number is 2 more and mass number is 4 more 
E) atomic number is 2 more and mass number is 2 less 
A) atomic number is 2 less and mass number is 2 less 
B) atomic number is 1 less and mass number is 2 less 
C) atomic number is 2 less and mass number is 4 less 
D) atomic number is 2 more and mass number is 4 more 
E) atomic number is 2 more and mass number is 2 less

Question 9

On average, ________ neutrons are produced by every fission of a uranium-235 nucleus.

Accepted Answer

A) 4 
B) 3.5 
C) 1 
D) 2.4 
E) 2 
A) 4 
B) 3.5 
C) 1 
D) 2.4 
E) 2

Question 10

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   Co nucleus? (The mass of a cobalt-60 nucleus is 59.9338 amu.)

Accepted Answer

A) 1.37 × 10-12 
B) 3.04 × 10-12 
C) 2.49 × 10-12 
D) 9.43 × 10-13 
E) 7.01 × 10-14 
A) 1.37 × 10-12 
B) 3.04 × 10-12 
C) 2.49 × 10-12 
D) 9.43 × 10-13 
E) 7.01 × 10-14

Question 11

Which one of the following processes results in a decrease in the number of neutrons?

Accepted Answer

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

Question 12

Radioactive decay is a first order kinetic process.

Accepted Answer

A) True 
 B)False

Question 13

The neutron/proton ratio of stable nuclei increases with increasing atomic number.

Accepted Answer

A) True 
 B)False

Question 14

If we start with 1.000 g of cobalt-60, 0.400 g will remain after 7.00 yr. This means that the half-life of cobalt-60 is ________ yr.

Accepted Answer

A) 12.1 
B) 17.5 
C) 2.80 
D) 5.30 
E) 7.65 
A) 12.1 
B) 17.5 
C) 2.80 
D) 5.30 
E) 7.65

Question 15

Transuranium elements have atomic numbers greater than ________.

Accepted Answer

A) 90 
B) 91 
C) 92 
D) 93 
E) 94 
A) 90 
B) 91 
C) 92 
D) 93 
E) 94

Question 16

A rock contains 0.153 mg of lead-206 for each milligram of uranium-238. The half-life for the decay of uranium-238 to lead-206 is 4.5 × 109 yr. The rock was formed ________ years ago.

Accepted Answer

A) 6.89 × 108 
B) 5.60 × 108 
C) 7.33 × 108 
D) 1.06 × 109 
E) 8.08 × 108 
A) 6.89 × 108 
B) 5.60 × 108 
C) 7.33 × 108 
D) 1.06 × 109 
E) 8.08 × 108

Question 17

Which of the following correctly represents the transmutation in which neptunium-239 is produced via bombardment of uranium-238 with a neutron?

Accepted Answer

A)    U(   n,   e)   Np 
B)    U(   n,   p)   Np 
C)    U(   n, γ)   Np 
D)    U(   n,   α)   Np 
E)    U(   n,   n)   Np 
A)    U(   n,   e)   Np 
B)    U(   n,   p)   Np 
C)    U(   n, γ)   Np 
D)    U(   n,   α)   Np 
E)    U(   n,   n)   Np

Question 18

The missing product from this reaction is ________.   Se +   e → _____

Accepted Answer

A)    Se 
B)    As 
C)    Se 
D)    Br 
E) none of the above 
A)    Se 
B)    As 
C)    Se 
D)    Br 
E) none of the above

Question 19

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 20

Charged particles are accelerated because the faster they move there is a greater chance of producing a nuclear reaction.

Accepted Answer

A) True 
 B)False

Exam 21: Nuclear Chemistry

List the common particles and their symbols used in descriptions of radioactive decay and nuclear transformations.

The reaction shown below is responsible for creating 14C in the atmosphere. What is the bombarding particle? N + _____ → C + H

What happens in the nucleus of an atom that undergoes positron emission?

In balancing the nuclear reaction U → E + He, the identity of element E is ________.

The SI unit of an absorbed dose of radiation is the gray.

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

The half-life of carbon-11 is 20.3 minutes. How much of a 100.0 mg sample remains after 1.6 hours?

Alpha decay produces a new nucleus whose ________ than those respectively of the original nucleus.

On average, ________ neutrons are produced by every fission of a uranium-235 nucleus.

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 Co nucleus? (The mass of a cobalt-60 nucleus is 59.9338 amu.)

Which one of the following processes results in a decrease in the number of neutrons?

Radioactive decay is a first order kinetic process.

The neutron/proton ratio of stable nuclei increases with increasing atomic number.

If we start with 1.000 g of cobalt-60, 0.400 g will remain after 7.00 yr. This means that the half-life of cobalt-60 is ________ yr.

Transuranium elements have atomic numbers greater than ________.

A rock contains 0.153 mg of lead-206 for each milligram of uranium-238. The half-life for the decay of uranium-238 to lead-206 is 4.5 × 109 yr. The rock was formed ________ years ago.

Which of the following correctly represents the transmutation in which neptunium-239 is produced via bombardment of uranium-238 with a neutron?

The missing product from this reaction is ________. Se + e → _____

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

Charged particles are accelerated because the faster they move there is a greater chance of producing a nuclear 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 reaction shown below is responsible for creating ¹⁴C in the atmosphere. What is the bombarding particle? N + _____ → C + H

A rock contains 0.153 mg of lead-206 for each milligram of uranium-238. The half-life for the decay of uranium-238 to lead-206 is 4.5 × 10⁹ yr. The rock was formed ________ years ago.

The missing product from this reaction is ____. Se + e → _