Question 1

When living tissue is irradiated most of the energy is absorbed by __________.

Accepted Answer

The answer of When living tissue is irradiated most of...

Question 2

Cesium-137 undergoes beta decay and has a half-life of 30.0 years. How many beta particles are emitted by a 14.0-g sample of cesium-137 in three minutes?

Accepted Answer

A) 6.1 × 1013 
B) 6.2 × 1022 
C) 8.4 × 1015 
D) 1.3 × 10-8 
E) 8.1 × 1015 
A) 6.1 × 1013 
B) 6.2 × 1022 
C) 8.4 × 1015 
D) 1.3 × 10-8 
E) 8.1 × 1015

Question 3

e represents __________.

Accepted Answer

beta emiss

Question 4

The half-life for the beta decay of potassium-40 is 1.3 × 109 years. What is the rate constant for this decay?

Accepted Answer

t_1/2= 0.693/k 1.3 × 10⁹

Question 5

In the formula k=0.693/t1/2, k is the decay constant.

Accepted Answer

A) True 
 B)False

Question 6

The major type of cancer caused by radiation is __________.

Accepted Answer

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

Question 7

The half-life of 218Po is 3.1 minutes. How much of a 155 gram sample remains after 0.40 hours?

Accepted Answer

A) 0.00067 g 
B) 0.0072 g 
C) 0.72 g 
D) 0.0047 g 
E) none of the above 
A) 0.00067 g 
B) 0.0072 g 
C) 0.72 g 
D) 0.0047 g 
E) none of the above

Question 8

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 9

The belt of nuclear stability ends with the element __________.

Accepted Answer

A) lead 
B) polonium 
C) radon 
D) astatine 
E) bismuth 
A) lead 
B) polonium 
C) radon 
D) astatine 
E) bismuth

Question 10

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 11

Atoms containing radioactive nuclei are called __________.

Accepted Answer

A) radionuclides 
B) radioisotopes 
C) nucleons 
D) nuclides 
E) radioisophores 
A) radionuclides 
B) radioisotopes 
C) nucleons 
D) nuclides 
E) radioisophores

Question 12

Which one of the following is a correct representation of a beta particle?

Accepted Answer

A)    e 
B)    β 
C)    e 
D)    e 
E)    β 
A)    e 
B)    β 
C)    e 
D)    e 
E)    β

Question 13

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

Accepted Answer

The answer of The amount of fissionable material necessary to...

Question 14

Which one of the following processes results in an increase in the atomic number?

Accepted Answer

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

Question 15

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

Question 16

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) M2O2 
A) M2O 
B) MO 
C) MO2 
D) M2O3 
E) M2O2

Question 17

In balancing the nuclear reaction   Br → E +   e, the identity of element E is __________.

Accepted Answer

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

Question 18

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 19

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 20

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

Exam 21: Nuclear Chemistry

When living tissue is irradiated most of the energy is absorbed by __________.

Cesium-137 undergoes beta decay and has a half-life of 30.0 years. How many beta particles are emitted by a 14.0-g sample of cesium-137 in three minutes?

e represents __________.

The half-life for the beta decay of potassium-40 is 1.3 × 109 years. What is the rate constant for this decay?

In the formula k=0.693/t1/2, k is the decay constant.

The major type of cancer caused by radiation is __________.

The half-life of 218Po is 3.1 minutes. How much of a 155 gram sample remains after 0.40 hours?

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

The belt of nuclear stability ends with the element __________.

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

Atoms containing radioactive nuclei are called __________.

Which one of the following is a correct representation of a beta particle?

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

Which one of the following processes results in an increase in the atomic number?

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

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

In balancing the nuclear reaction Br → E + e, the identity of element E is __________.

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

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

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

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 half-life for the beta decay of potassium-40 is 1.3 × 10⁹ years. What is the rate constant for this decay?

In the formula k=0.693/t_1/2, k is the decay constant.

The half-life of ²¹⁸Po is 3.1 minutes. How much of a 155 gram sample remains after 0.40 hours?

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

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