Question 1

Which type of nuclear process requires an extremely high temperature (millions of degrees)?

Accepted Answer

A) beta decay 
B) fission reaction 
C) fusion reaction 
D) alpha decay 
E) positron emission 
A) beta decay 
B) fission reaction 
C) fusion reaction 
D) alpha decay 
E) positron emission

Question 2

What role does cadmium metal (Cd)play in a nuclear reactor?

Accepted Answer

A) slows down the fission neutrons (moderator) 
B) transfers heat from the reactor to the heat exchanger (primary coolant) 
C) controls chain reaction (control rods) 
D) transfers heat from the condenser to the environment (cooling tower) 
E) undergoes fission (fuel rods) 
A) slows down the fission neutrons (moderator) 
B) transfers heat from the reactor to the heat exchanger (primary coolant) 
C) controls chain reaction (control rods) 
D) transfers heat from the condenser to the environment (cooling tower) 
E) undergoes fission (fuel rods)

Question 3

Tritium is a radioisotope of hydrogen having a half-life of 12.3 years.If you initially had 1.0 $\times$ 10-7 mole of tritium, how many moles of tritium would be left after 78 years?

Accepted Answer

1.2 @#LAT-DLM& 10<su

Question 4

Beta particles are identical to

Accepted Answer

A) protons. 
B) helium atoms. 
C) hydrogen atoms. 
D) helium nuclei. 
E) electrons. 
A) protons. 
B) helium atoms. 
C) hydrogen atoms. 
D) helium nuclei. 
E) electrons.

Question 5

Balance the equation

Accepted Answer

The answer of Balance the equation  ...

Question 6

How many 14C atoms are in a charcoal sample that has a decay rate of 3,500 disintegrations per min? (For 14C, t1/2 = 5,730 yr.)

Accepted Answer

A) 2.9 $\times$ 107 atoms 
B) 8.0 $\times$ 10-7 atoms 
C) 1.4 $\times$ 1014 atoms 
D) 1.5 $\times$ 1013 atoms 
E) 6.02 $\times$ 1020 atoms 
A) 2.9 $\times$ 107 atoms 
B) 8.0 $\times$ 10-7 atoms 
C) 1.4 $\times$ 1014 atoms 
D) 1.5 $\times$ 1013 atoms 
E) 6.02 $\times$ 1020 atoms

Question 7

The energy equivalent of 1 amu is

Accepted Answer

A) 5.0 $\times$ 10-19 J 
B) 5.4 $\times$ 1043 J 
C) 6.6 $\times$ 109 J 
D) 1.5 $\times$ 10-10 J 
A) 5.0 $\times$ 10-19 J 
B) 5.4 $\times$ 1043 J 
C) 6.6 $\times$ 109 J 
D) 1.5 $\times$ 10-10 J

Question 8

What fraction of radioactive atoms remains in a sample after six half-lives?

Accepted Answer

A) zero 
B) 1/6 
C) 1/16 
D) 1/32 
E) 1/64 
A) zero 
B) 1/6 
C) 1/16 
D) 1/32 
E) 1/64

Question 9

Lead-209 undergoes beta decay.Write a balanced equation for this reaction.

Accepted Answer

The answer of Lead-209 undergoes beta decay.Write a balanced equation...

Question 10

Charcoal samples taken from holes dug at Stonehenge, England, have a carbon-14 specific activity of 9.50 dpm per gram carbon. Living wood has a specific activity of 15.3 dpm per gram of carbon.Given that the half-life of carbon-14 is 5730 yr, how long ago was the wood part of a living plant?

Accepted Answer

A) 3940 yr 
B) 3550 yr 
C) 9230 yr 
D) 5700 yr 
E) 13300 yr 
A) 3940 yr 
B) 3550 yr 
C) 9230 yr 
D) 5700 yr 
E) 13300 yr

Question 11

A radioisotope decays to give an alpha particle and Pb-208. What was the original element?

Accepted Answer

A) Se 
B) Bi 
C) Po 
D) Hg 
E) Rn 
A) Se 
B) Bi 
C) Po 
D) Hg 
E) Rn

Question 12

Compare nuclear reactions with chemical reactions in terms of the quantity of energy released.

Accepted Answer

Nuclear reactions release far

Which type of nuclear process requires an extremely high temperature (millions of degrees)?

What role does cadmium metal (Cd)play in a nuclear reactor?

Tritium is a radioisotope of hydrogen having a half-life of 12.3 years.If you initially had 1.0 $\times$ 10^-7 mole of tritium, how many moles of tritium would be left after 78 years?

Beta particles are identical to

Balance the equation

How many ¹⁴C atoms are in a charcoal sample that has a decay rate of 3,500 disintegrations per min? (For ¹⁴C, t_1/2 = 5,730 yr.)

The energy equivalent of 1 amu is

What fraction of radioactive atoms remains in a sample after six half-lives?

Lead-209 undergoes beta decay.Write a balanced equation for this reaction.

Charcoal samples taken from holes dug at Stonehenge, England, have a carbon-14 specific activity of 9.50 dpm per gram carbon. Living wood has a specific activity of 15.3 dpm per gram of carbon.Given that the half-life of carbon-14 is 5730 yr, how long ago was the wood part of a living plant?

A radioisotope decays to give an alpha particle and Pb-208. What was the original element?

Compare nuclear reactions with chemical reactions in terms of the quantity of energy released.

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

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Exam 23: Nuclear Chemistry

Which type of nuclear process requires an extremely high temperature (millions of degrees)?

What role does cadmium metal (Cd)play in a nuclear reactor?

Tritium is a radioisotope of hydrogen having a half-life of 12.3 years.If you initially had 1.0 ×\times× 10-7 mole of tritium, how many moles of tritium would be left after 78 years?

Beta particles are identical to

Balance the equation

How many 14C atoms are in a charcoal sample that has a decay rate of 3,500 disintegrations per min? (For 14C, t1/2 = 5,730 yr.)

The energy equivalent of 1 amu is

What fraction of radioactive atoms remains in a sample after six half-lives?

Lead-209 undergoes beta decay.Write a balanced equation for this reaction.

Charcoal samples taken from holes dug at Stonehenge, England, have a carbon-14 specific activity of 9.50 dpm per gram carbon. Living wood has a specific activity of 15.3 dpm per gram of carbon.Given that the half-life of carbon-14 is 5730 yr, how long ago was the wood part of a living plant?

A radioisotope decays to give an alpha particle and Pb-208. What was the original element?

Compare nuclear reactions with chemical reactions in terms of the quantity of energy released.

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Tritium is a radioisotope of hydrogen having a half-life of 12.3 years.If you initially had 1.0 $\times$ 10^-7 mole of tritium, how many moles of tritium would be left after 78 years?

How many ¹⁴C atoms are in a charcoal sample that has a decay rate of 3,500 disintegrations per min? (For ¹⁴C, t_1/2 = 5,730 yr.)