Question 1

The only element with no neutrons is .

Accepted Answer

The answer of The only element with no neutrons is...

Question 2

The half- life for beta decay of strontium- 90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium- 90. How many years would pass before the strontium- 90 concentration would drop to 1.0 ppm?

Accepted Answer

A)  92.3 
B)  0.112 
C)  96.9 
D)  131 
E)  186 
A)  92.3 
B)  0.112 
C)  96.9 
D)  131 
E)  186

Question 3

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 4

The decay of a radionuclide with a half- life of 4.3 × 105 years has a rate constant (in yr- 1) equal to
)

Accepted Answer

A)  2.3 × 10- 6. 
B)  1.6 × 10- 6. 
C)  5.9 × 10- 8. 
D)  6.2 × 105. 
E)  2.8 × 103. 
A)  2.3 × 10- 6. 
B)  1.6 × 10- 6. 
C)  5.9 × 10- 8. 
D)  6.2 × 105. 
E)  2.8 × 103.

Question 5

In the nuclear transmutation represented by  ?, what is the product?

Accepted Answer

A)  uranium- 245 
B)  curium- 242 
C)  uranium- 242 
D)  curium- 245 
E)  uranium- 243 
A)  uranium- 245 
B)  curium- 242 
C)  uranium- 242 
D)  curium- 245 
E)  uranium- 243

Question 6

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

Accepted Answer

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

Question 7

Atoms containing radioactive nuclei are called

Accepted Answer

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

Question 8

131I has a half- life of 8.04 days. Assuming you start with a 1.53 mg sample of 131I, how many mg will remain after 13.0 days ?

Accepted Answer

A)  0.422 
B)  0.499 
C)  0.835 
D)  0.268 
E)  0.440 
A)  0.422 
B)  0.499 
C)  0.835 
D)  0.268 
E)  0.440

Question 9

This reaction is an example of .

Accepted Answer

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

Question 10

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 11

_____________discovered radioactivity.

Accepted Answer

The answer of _____________discovered radioactivity....

Question 12

Cesium- 137 undergoes beta decay and has a half- life of 30 years. How many beta particles are emitted by a 14.0- g sample of cesium- 137 in three minutes?

Accepted Answer

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

Question 13

The reaction shown below is responsible for creating 14C in the atmosphere. What is the bombarding particle ?

Accepted Answer

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

Question 14

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

Question 15

The missing product in this reaction would be found in which group of the periodic table?

Accepted Answer

A)  2A 
B)  1A 
C)  3A 
D)  8A 
E)  7A 
A)  2A 
B)  1A 
C)  3A 
D)  8A 
E)  7A

Question 16

Which one of the following is used as a radiotracer to study blood?

Accepted Answer

A)  iodine- 131 
B)  phosphorus- 32 
C)  iron- 59 
D)  sodium- 23 
E)  technetium- 99 
A)  iodine- 131 
B)  phosphorus- 32 
C)  iron- 59 
D)  sodium- 23 
E)  technetium- 99

Question 17

The relative biological effectiveness (RB
E) is 10 fold greater for gamma radiation than for alpha radiation.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

A proton is converte

Question 19

In balancing the nuclear reaction  , the identity of element E is .

Accepted Answer

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

Question 20

What are the "dees" ion a particle accelerator?

Accepted Answer

A)  targets 
B)  electrodes 
C)  magnets 
D)  vibration places 
E)  transmutated bees 
A)  targets 
B)  electrodes 
C)  magnets 
D)  vibration places 
E)  transmutated bees

Exam 21: Nuclear Chemistry

The only element with no neutrons is .

The half- life for beta decay of strontium- 90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium- 90. How many years would pass before the strontium- 90 concentration would drop to 1.0 ppm?

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

The decay of a radionuclide with a half- life of 4.3 × 105 years has a rate constant (in yr- 1) equal to )

In the nuclear transmutation represented by ?, what is the product?

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

Atoms containing radioactive nuclei are called

131I has a half- life of 8.04 days. Assuming you start with a 1.53 mg sample of 131I, how many mg will remain after 13.0 days ?

This reaction is an example of .

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

_____________discovered radioactivity.

Cesium- 137 undergoes beta decay and has a half- life of 30 years. How many beta particles are emitted by a 14.0- g sample of cesium- 137 in three minutes?

The reaction shown below is responsible for creating 14C in the atmosphere. What is the bombarding particle ?

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 missing product in this reaction would be found in which group of the periodic table?

Which one of the following is used as a radiotracer to study blood?

The relative biological effectiveness (RB E) is 10 fold greater for gamma radiation than for alpha radiation.

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

In balancing the nuclear reaction , the identity of element E is .

What are the "dees" ion a particle accelerator?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

The decay of a radionuclide with a half- life of 4.3 × 10⁵years has a rate constant (in yr^-¹) equal to )

¹³¹I has a half- life of 8.04 days. Assuming you start with a 1.53 mg sample of ¹³¹I, how many mg will remain after 13.0 days ?

The reaction shown below is responsible for creating ¹⁴C in the atmosphere. What is the bombarding particle ?

When two atoms of ²H are fused to form one atom of ⁴He, the total energy evolved is 3)83 × 10^-¹²J. What is the total change in mass (in kg) for this reaction? (C = 3.00 × 10⁸m/s)