Question 1

The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is ________.

Accepted Answer

A) it causes death of bottom dwelling organisms because it agglutinates and settles to the bottom, poisoning bottom dwelling organisms 
B) it causes oxygen depletion in the water 
C) it rises to the surface and absorbs wavelengths needed by aquatic plants 
D) it decomposes endothermically causing the temperature of the water to decrease below the limits within which most aquatic organisms can live 
E) it causes the water to become murky 
A) it causes death of bottom dwelling organisms because it agglutinates and settles to the bottom, poisoning bottom dwelling organisms 
B) it causes oxygen depletion in the water 
C) it rises to the surface and absorbs wavelengths needed by aquatic plants 
D) it decomposes endothermically causing the temperature of the water to decrease below the limits within which most aquatic organisms can live 
E) it causes the water to become murky

Question 2

The bond energy of oxygen is higher than that of nitrogen.

Accepted Answer

A) True 
 B)False

Question 3

Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere.

Accepted Answer

A) CFCl3 
B) CO2  
C) O2 
D) N2 
E) He 
A) CFCl3 
B) CO2  
C) O2 
D) N2 
E) He

Question 4

In the reactions involved in the photodecomposition of ozone (shown below),what does M symbolize?
1.O2 (g)+ hν → O (g)+ O (g)
2.O (g)+ O2 (g)+ M (g)→ O3 (g)+ M* (g)
3.O3 (g)+ hν → O2 (g)+ O (g)
4.O (g)+ O (g)+ M (g)→ O2 (g)+ M* (g)

Accepted Answer

A) mesosphere 
B) metal 
C) molybdenum 
D) methane 
E) molecule 
A) mesosphere 
B) metal 
C) molybdenum 
D) methane 
E) molecule

Question 5

The "scale" caused by hard water is ________.

Accepted Answer

A) calcium ions 
B) sodium chloride 
C) magnesium oxide 
D) sodium ions 
E) calcium carbonate 
A) calcium ions 
B) sodium chloride 
C) magnesium oxide 
D) sodium ions 
E) calcium carbonate

Question 6

The source(s)of sulfur dioxide in the atmosphere is/are ________.

Accepted Answer

A) volcanic gases 
B) forest fires 
C) bacterial action 
D) fossil-fuel combustion 
E) all of the above 
A) volcanic gases 
B) forest fires 
C) bacterial action 
D) fossil-fuel combustion 
E) all of the above

The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is ________.

The bond energy of oxygen is higher than that of nitrogen.

Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere.

In the reactions involved in the photodecomposition of ozone (shown below),what does M symbolize? 1.O₂ (g)+ hν → O (g)+ O (g) 2.O (g)+ O₂ (g)+ M (g)→ O₃ (g)+ M^* (g) 3.O₃ (g)+ hν → O₂(g)+ O (g) 4.O (g)+ O (g)+ M (g)→ O₂(g)+ M^* (g)

The "scale" caused by hard water is ________.

The source(s)of sulfur dioxide in the atmosphere is/are ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

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Exam 18: Chemistry of the Environment

The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is ________.

The bond energy of oxygen is higher than that of nitrogen.

Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere.

In the reactions involved in the photodecomposition of ozone (shown below),what does M symbolize? 1.O2 (g)+ hν → O (g)+ O (g) 2.O (g)+ O2 (g)+ M (g)→ O3 (g)+ M* (g) 3.O3 (g)+ hν → O2 (g)+ O (g) 4.O (g)+ O (g)+ M (g)→ O2 (g)+ M* (g)

The "scale" caused by hard water is ________.

The source(s)of sulfur dioxide in the atmosphere is/are ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

In the reactions involved in the photodecomposition of ozone (shown below),what does M symbolize? 1.O₂ (g)+ hν → O (g)+ O (g) 2.O (g)+ O₂ (g)+ M (g)→ O₃ (g)+ M^* (g) 3.O₃ (g)+ hν → O₂(g)+ O (g) 4.O (g)+ O (g)+ M (g)→ O₂(g)+ M^* (g)