Exam 18: Chemistry of the Environment

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Of the reactions involved in the photodecomposition of ozone (shown below), which are photochemical? 1) O₂(g) + hv →O (g) + O (g) 2) O (g) + O₂(g) + M (g) → O₃(g) + M^(g) 3) O₃(g) + hv →O₂(g) + O (g) 4) O (g) + O (g) + M (g)→O₂(g) + M^(g)

(Multiple Choice)

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Question 61

Municipal water treatment consists of five steps beginning with chlorination.

(True/False)

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Question 62

Water containing high concentrations of cations is called hard water.

(Multiple Choice)

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Question 63

To reduce lead toxicity, the metal, , is used in the electrodeposition of automobiles to prevent corrosion.

(Short Answer)

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Question 64

Approximately 90% of the earth's ozone is in the .

(Short Answer)

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Question 65

The three most concentrated ions in seawater are .

(Essay)

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Question 66

Show how a molecule of C₂F₂Cl₂can destroy two molecules of ozone, O₃.

(Essay)

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Question 67

Why does the upper atmosphere contain only very little dissociated nitrogen?

(Multiple Choice)

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Question 68

Ozone is a(n) of oxygen.

(Multiple Choice)

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Question 69

Which one of the following is a source of carbon dioxide in the troposphere?

(Multiple Choice)

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Question 70

CO₂from hydrocarbon combustion creates a major environmental problem that is described as )

(Multiple Choice)

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Question 71

The concentration of water vapor in a sample of air that has a partial pressure of water of 0.91 torr and a total pressure of air of 735 torr is _ ppm.

(Multiple Choice)

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Question 72

The pressure of the atmosphere .

(Multiple Choice)

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Question 73

A chemical bond rupture from the absorption of a photon is called _.

(Short Answer)

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Question 74

A single individual typically uses the greatest quantity of water for .

(Multiple Choice)

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Question 75

The "scale" caused by hard water is _ .

(Multiple Choice)

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Question 76

The concept that radiowave propagation was affected by the atmosphere of the earth was discovered by _ .

(Short Answer)

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Question 77

The C- Cl and C- F bond dissociation energies in CF₃Cl are 339 kJ/mol and 482 kJ/mol, respectively. The maximum wavelengths of electromagnetic radiation required to rupture these bonds are And , respectively.

(Multiple Choice)

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Question 78

Incomplete combustion of carbon- containing materials occurs when .

(Multiple Choice)

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Question 79

How does lime reduce sulfur dioxide emissions from the burning of coal?

(Multiple Choice)

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Question 80

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Exam 18: Chemistry of the Environment

Of the reactions involved in the photodecomposition of ozone (shown below), which are photochemical? 1) O2 (g) + hv →O (g) + O (g) 2) O (g) + O2 (g) + M (g) → O3 (g) + M* (g) 3) O3 (g) + hv →O2 (g) + O (g) 4) O (g) + O (g) + M (g)→O2 (g) + M* (g)

Municipal water treatment consists of five steps beginning with chlorination.

Water containing high concentrations of cations is called hard water.

To reduce lead toxicity, the metal, , is used in the electrodeposition of automobiles to prevent corrosion.

Approximately 90% of the earth's ozone is in the .

The three most concentrated ions in seawater are .

Show how a molecule of C2F2Cl2 can destroy two molecules of ozone, O3.

Why does the upper atmosphere contain only very little dissociated nitrogen?

Ozone is a(n) of oxygen.

Which one of the following is a source of carbon dioxide in the troposphere?

CO2 from hydrocarbon combustion creates a major environmental problem that is described as )

The concentration of water vapor in a sample of air that has a partial pressure of water of 0.91 torr and a total pressure of air of 735 torr is _ ppm.

The pressure of the atmosphere .

A chemical bond rupture from the absorption of a photon is called _.

A single individual typically uses the greatest quantity of water for .

The "scale" caused by hard water is _ .

The concept that radiowave propagation was affected by the atmosphere of the earth was discovered by _ .

The C- Cl and C- F bond dissociation energies in CF3Cl are 339 kJ/mol and 482 kJ/mol, respectively. The maximum wavelengths of electromagnetic radiation required to rupture these bonds are And , respectively.

Incomplete combustion of carbon- containing materials occurs when .

How does lime reduce sulfur dioxide emissions from the burning of coal?

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

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

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Of the reactions involved in the photodecomposition of ozone (shown below), which are photochemical? 1) O₂(g) + hv →O (g) + O (g) 2) O (g) + O₂(g) + M (g) → O₃(g) + M^(g) 3) O₃(g) + hv →O₂(g) + O (g) 4) O (g) + O (g) + M (g)→O₂(g) + M^(g)

Show how a molecule of C₂F₂Cl₂can destroy two molecules of ozone, O₃.

CO₂from hydrocarbon combustion creates a major environmental problem that is described as )

The C- Cl and C- F bond dissociation energies in CF₃Cl are 339 kJ/mol and 482 kJ/mol, respectively. The maximum wavelengths of electromagnetic radiation required to rupture these bonds are And , respectively.