The ratio of 238U to 206Pb is used to date old mineral samples.Each 1.000 g of 238U that decays eventually produces 0.866 g of 206Pb.If the half-life of 238U is 4.468 × 109 years,what is the age of a mineral that has a 238U/206Pb mass ratio of 2.00?

A) 2)94 × 109 years B) 3)60 × 109 years C) 3)87 × 109 years D) 4)47 × 109 years A) 2)94 × 109 years B) 3)60 × 109 years C) 3)87 × 109 years D) 4)47 × 109 years

A) the amount of sample that undergoes 1 disintegration per second. B) the amount of sample that undergoes 3.7 × 1010 disintegrations per second. C) the amount of tissue damage done by radiation. D) equal to 0.01 J of energy absorbed per kilogram of tissue. A) the amount of sample that undergoes 1 disintegration per second. B) the amount of sample that undergoes 3.7 × 1010 disintegrations per second. C) the amount of tissue damage done by radiation. D) equal to 0.01 J of energy absorbed per kilogram of tissue.

If the mass of one neutron is 1.00866 amu,the mass of one proton is 1.00728 amu,and the mass of 14C nucleus is 13.99995 amu,calculate the binding energy for the 14C nucleus.

A) 9)92 × 109 kJ/mol B) 1)02 × 1010 kJ/mol C) 5)54 × 1011 kJ/mol D) 5)95 × 1011 kJ/mol A) 9)92 × 109 kJ/mol B) 1)02 × 1010 kJ/mol C) 5)54 × 1011 kJ/mol D) 5)95 × 1011 kJ/mol

What mass percent of 235U (the fissionable isotope)is used in the fuel in nuclear power plants?

A) 3% B) 14% C) 27% D) 83% A) 3% B) 14% C) 27% D) 83%

Exam 22: Nuclear Chemistry

The ratio of ²³⁸U to ²⁰⁶Pb is used to date old mineral samples.Each 1.000 g of ²³⁸U that decays eventually produces 0.866 g of ²⁰⁶Pb.If the half-life of ²³⁸U is 4.468 × 10⁹ years,what is the age of a mineral that has a ²³⁸U/²⁰⁶Pb mass ratio of 2.00?

(Multiple Choice)

4.9/5

(67)

Question 61

The nuclear transmutation reaction that leads to the synthesis of plutonium-241 is shown below.What is the identity of the α-particle bombardment target in this reaction? ? + → +

(Multiple Choice)

4.9/5

(69)

Question 62

A curie is:

(Multiple Choice)

4.8/5

(89)

Question 63

If the mass of one neutron is 1.00866 amu,the mass of one proton is 1.00728 amu,and the mass of ¹⁴C nucleus is 13.99995 amu,calculate the binding energy for the ¹⁴C nucleus.

(Multiple Choice)

4.9/5

(94)

Question 64

Which is more dangerous in terms of short-lived exposure to radiation? One mole of

(Multiple Choice)

4.9/5

(70)

Question 65

The reaction below releases ________ kJ/mol.The atomic masses are ³He (3.0160),¹H (1.0078),⁴He (4.0026),⁰e (0.0005486). + → +

(Short Answer)

4.9/5

(78)

Question 66

What mass percent of ²³⁵U (the fissionable isotope)is used in the fuel in nuclear power plants?

(Multiple Choice)

4.9/5

(68)

Question 67

Four heavy elements (A,B,C,and D)will fission when bombarded by neutrons.In addition to fissioning into two smaller elements,A also gives off a beta particle,B gives off gamma rays,C gives off neutrons,and D gives off alpha particles.Which element would make a possible fuel for a nuclear reactor?

(Multiple Choice)

4.8/5

(78)

Question 68

Which type of radiation is not used for medical applications?

(Multiple Choice)

4.9/5

(64)

Question 69

Mass defect is the mass lost when

(Multiple Choice)

4.9/5

(82)

Question 70

Most of the radiation to which people are exposed comes from

(Multiple Choice)

4.7/5

(89)

Question 71

What does the term "critical mass" mean? It is the

(Multiple Choice)

4.7/5

(82)

Question 72

The practical limit for ¹⁴C dating occurs when its activity falls to 0.20% of its original value due to interference in detectors by natural background radiation.If the half-life is 5715 years,what is the maximum age of a sample that can be dated by ¹⁴C without interference?

(Multiple Choice)

4.8/5

(74)

Question 73

Energy is ________ (released,required)in the transmutation reaction shown below.The atomic masses are ⁴⁰Ar (39.9624),¹H (1.0078),⁴⁰K (39.9640),¹n (1.0087). + → +

(Short Answer)

4.8/5

(88)

Question 74

Which of the following isotopes is the least stable?

(Multiple Choice)

4.8/5

(78)

Question 75

What type of shielding can be used to protect against gamma rays?

(Multiple Choice)

4.8/5

(72)

Question 76

Which one of the following instruments would be the least suitable for detecting particles given off in radioactive decay?

(Multiple Choice)

4.9/5

(81)

Question 77

Radiation is detected by its ________ properties.

(Multiple Choice)

4.9/5

(69)

Question 78

Human bones found on the west coast of the United States were thought to be remains of a prospector who lived in the 19^th century.The bones were subjected to carbon-14 dating.Carbon-14 has a half-life of 5715 years.Living organisms decay at a rate of 15.3 disintegrations per minute per gram of carbon.The bones had a carbon-14 decay rate of 5.13 disintegrations per minute per gram of carbon.To one significant figure the age of the bones is years old,so the person (did,did not)live in the 19^th century.

(Short Answer)

4.7/5

(79)

Question 79

Elements with ________ atomic mass are best possible candidates for a fusion reaction.

(Multiple Choice)

4.9/5

(85)

Question 80

Showing 61 - 80 of 85

Exam 22: Nuclear Chemistry

The ratio of 238U to 206Pb is used to date old mineral samples.Each 1.000 g of 238U that decays eventually produces 0.866 g of 206Pb.If the half-life of 238U is 4.468 × 109 years,what is the age of a mineral that has a 238U/206Pb mass ratio of 2.00?

The nuclear transmutation reaction that leads to the synthesis of plutonium-241 is shown below.What is the identity of the α-particle bombardment target in this reaction? ? + → +

A curie is:

If the mass of one neutron is 1.00866 amu,the mass of one proton is 1.00728 amu,and the mass of 14C nucleus is 13.99995 amu,calculate the binding energy for the 14C nucleus.

Which is more dangerous in terms of short-lived exposure to radiation? One mole of

The reaction below releases ________ kJ/mol.The atomic masses are 3He (3.0160),1H (1.0078),4He (4.0026),0e (0.0005486). + → +

What mass percent of 235U (the fissionable isotope)is used in the fuel in nuclear power plants?

Four heavy elements (A,B,C,and D)will fission when bombarded by neutrons.In addition to fissioning into two smaller elements,A also gives off a beta particle,B gives off gamma rays,C gives off neutrons,and D gives off alpha particles.Which element would make a possible fuel for a nuclear reactor?

Which type of radiation is not used for medical applications?

Mass defect is the mass lost when

Most of the radiation to which people are exposed comes from

What does the term "critical mass" mean? It is the

The practical limit for 14C dating occurs when its activity falls to 0.20% of its original value due to interference in detectors by natural background radiation.If the half-life is 5715 years,what is the maximum age of a sample that can be dated by 14C without interference?

Energy is ________ (released,required)in the transmutation reaction shown below.The atomic masses are 40Ar (39.9624),1H (1.0078),40K (39.9640),1n (1.0087). + → +

Which of the following isotopes is the least stable?

What type of shielding can be used to protect against gamma rays?

Which one of the following instruments would be the least suitable for detecting particles given off in radioactive decay?

Radiation is detected by its ________ properties.

Elements with ________ atomic mass are best possible candidates for a fusion reaction.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Organic and Biological Chemistry

Filters

The ratio of ²³⁸U to ²⁰⁶Pb is used to date old mineral samples.Each 1.000 g of ²³⁸U that decays eventually produces 0.866 g of ²⁰⁶Pb.If the half-life of ²³⁸U is 4.468 × 10⁹ years,what is the age of a mineral that has a ²³⁸U/²⁰⁶Pb mass ratio of 2.00?

If the mass of one neutron is 1.00866 amu,the mass of one proton is 1.00728 amu,and the mass of ¹⁴C nucleus is 13.99995 amu,calculate the binding energy for the ¹⁴C nucleus.

The reaction below releases ________ kJ/mol.The atomic masses are ³He (3.0160),¹H (1.0078),⁴He (4.0026),⁰e (0.0005486). + → +

What mass percent of ²³⁵U (the fissionable isotope)is used in the fuel in nuclear power plants?

The practical limit for ¹⁴C dating occurs when its activity falls to 0.20% of its original value due to interference in detectors by natural background radiation.If the half-life is 5715 years,what is the maximum age of a sample that can be dated by ¹⁴C without interference?

Energy is ________ (released,required)in the transmutation reaction shown below.The atomic masses are ⁴⁰Ar (39.9624),¹H (1.0078),⁴⁰K (39.9640),¹n (1.0087). + → +