Question 1

Municipal water treatment consists of five steps ending with chlorination.

Accepted Answer

A) True 
 B)False

Question 2

Nitric oxide arises from auto emissions and reacts with oxygen to produce ________ which reacts with sunlight to produce ________ atoms which react with oxygen to produce ________.

Accepted Answer

nitrogen d

Question 3

Which of the following is (are)not a typical source of nitric oxide?

Accepted Answer

A) livestock emissions 
B) atmospheric electrical discharges 
C) internal combustion engines 
D) combustion of organic matter 
E) all of the above 
A) livestock emissions 
B) atmospheric electrical discharges 
C) internal combustion engines 
D) combustion of organic matter 
E) all of the above

Question 4

What is the concentration (ppm)of water vapor in a sample of air that has a partial pressure of water of 1.20 torr and a total pressure of air of 695 torr?

Accepted Answer

A) 1.7 
B) 0.17 
C) 5.8 ×   
D) 1.7 ×   
E) 0.58 
A) 1.7 
B) 0.17 
C) 5.8 ×   
D) 1.7 ×   
E) 0.58

Question 5

The total pressure of a component in a gas mixture is the product of its mole fraction and the partial mixture pressure.

Accepted Answer

A) True 
 B)False

Question 6

Of the following,only ________ does not result in the formation of acid rain.

Accepted Answer

A) carbon dioxide 
B) nitrogen dioxide 
C) sulfur dioxide 
D) nitrogen monoxide 
E) methane 
A) carbon dioxide 
B) nitrogen dioxide 
C) sulfur dioxide 
D) nitrogen monoxide 
E) methane

Question 7

Components of Air Mole Fraction Nitrogen 0.781
Oxygen 0.209
Argon 0.010
What is the partial pressure or nitrogen (in torr)in the atmosphere when the atmospheric pressure is 760.0 torr?

Accepted Answer

A) 159 
B) 594 
C) 611 
D) 7.60 
E) 760 
A) 159 
B) 594 
C) 611 
D) 7.60 
E) 760

Question 8

The mole fraction of nitrogen in dry air near sea level is 0.78084,where the molar mass of nitrogen is 28.013.The partial pressure of nitrogen when the total atmospheric pressure (dry air)is 97.5 kPa is

Accepted Answer

A) 126 
B) 4.51 
C) 77.0 
D) 2.16 × 103 
E) 2.75 
A) 126 
B) 4.51 
C) 77.0 
D) 2.16 × 103 
E) 2.75

Question 9

The concentration of   in a sample of seawater is 5.3 ×   M.What is the concentration (ppm)of   ?

Accepted Answer

A) 0.042 
B) 0.53 
C) 5.3 
D) 42 
E) 0.0053 
A) 0.042 
B) 0.53 
C) 5.3 
D) 42 
E) 0.0053

Question 10

The lime-soda process is ________ being added to water to cause precipitation of magnesium as Mg(OH)2 and is used for large-scale water-softening operations.

Accepted Answer

A) Fe2O3 
B) Al(OH)3 
C) CaO 
D) Fe2MgO4 
E) Na2O 
A) Fe2O3 
B) Al(OH)3 
C) CaO 
D) Fe2MgO4 
E) Na2O

Question 11

In the troposphere,temperature ________ with increasing altitude,while in the stratosphere,temperature ________ with increasing altitude.

Accepted Answer

A) increases, increases 
B) decreases, decreases 
C) increases, decreases 
D) decreases, increases 
E) decreases, remains constant 
A) increases, increases 
B) decreases, decreases 
C) increases, decreases 
D) decreases, increases 
E) decreases, remains constant

Question 12

What is/are the product(s)of photodissociation of molecular oxygen?

Accepted Answer

A) molecular nitrogen 
B) excited oxygen molecules 
C) ozone 
D) ozone and atomic oxygen 
E) atomic oxygen 
A) molecular nitrogen 
B) excited oxygen molecules 
C) ozone 
D) ozone and atomic oxygen 
E) atomic oxygen

Question 13

In the equation below,M is most likely ________. O + O2 + M → O3 + M*

Accepted Answer

A) Br2 
B) Xe 
C) SO2 
D) N2 
E) H2O 
A) Br2 
B) Xe 
C) SO2 
D) N2 
E) H2O

Question 14

Ozone depletion from chlorofluorocarbons is chiefly due to the production of free chlorine.

Accepted Answer

A) True 
 B)False

Question 15

What are the primary chemical pollutants that create acid rain?

Accepted Answer

sulfur dio

Question 16

What is the total pressure (torr)inside a container that contains a gas at 3.18 × 103 ppm where its partial pressure is   ?

Accepted Answer

A) 5.38 × 10-3 
B) 1.86 × 10-4 
C) 1.88 × 103 
D) 1.86 × 10-10 
E) 1.88 × 109 
A) 5.38 × 10-3 
B) 1.86 × 10-4 
C) 1.88 × 103 
D) 1.86 × 10-10 
E) 1.88 × 109

Question 17

The mole fraction of nitrous oxide in dry air near sea level is 0.00000050.The concentration of nitrous oxide is ________ molecules per liter,assuming an atmospheric pressure of 739 torr and a temperature of 29.5 °C.

Accepted Answer

A) 1.5 × 10-5 
B) 2.0 × 10-8 
C) 1.2 × 1016 
D) 8.9 × 1018 
E) 1.2 × 1017 
A) 1.5 × 10-5 
B) 2.0 × 10-8 
C) 1.2 × 1016 
D) 8.9 × 1018 
E) 1.2 × 1017

Question 18

Acid rain typically has a pH of about ________.

Accepted Answer

A) 7 
B) 5 
C) 4 
D) 2 
E) 1 
A) 7 
B) 5 
C) 4 
D) 2 
E) 1

Question 19

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

Accepted Answer

CF₂Cl₂ (g)+ hν → CF₂Cl (g)+ Cl (g) Cl (g)+

Question 20

The cumulative result of carbon dioxide,methane,and ozone in the troposphere on atmospheric temperatures is referred to as ________.

Accepted Answer

A) acid rain 
B) the greenhouse effect 
C) photoionization 
D) photochemical smog 
E) photodissociation 
A) acid rain 
B) the greenhouse effect 
C) photoionization 
D) photochemical smog 
E) photodissociation

Exam 18: Chemistry of the Environment

Municipal water treatment consists of five steps ending with chlorination.

Nitric oxide arises from auto emissions and reacts with oxygen to produce ________ which reacts with sunlight to produce ________ atoms which react with oxygen to produce ________.

Which of the following is (are)not a typical source of nitric oxide?

What is the concentration (ppm)of water vapor in a sample of air that has a partial pressure of water of 1.20 torr and a total pressure of air of 695 torr?

The total pressure of a component in a gas mixture is the product of its mole fraction and the partial mixture pressure.

Of the following,only ________ does not result in the formation of acid rain.

Components of Air Mole Fraction Nitrogen 0.781 Oxygen 0.209 Argon 0.010 What is the partial pressure or nitrogen (in torr)in the atmosphere when the atmospheric pressure is 760.0 torr?

The mole fraction of nitrogen in dry air near sea level is 0.78084,where the molar mass of nitrogen is 28.013.The partial pressure of nitrogen when the total atmospheric pressure (dry air)is 97.5 kPa is

The concentration of in a sample of seawater is 5.3 × M.What is the concentration (ppm)of ?

The lime-soda process is ________ being added to water to cause precipitation of magnesium as Mg(OH)2 and is used for large-scale water-softening operations.

In the troposphere,temperature ________ with increasing altitude,while in the stratosphere,temperature ________ with increasing altitude.

What is/are the product(s)of photodissociation of molecular oxygen?

In the equation below,M is most likely ________. O + O2 + M → O3 + M*

Ozone depletion from chlorofluorocarbons is chiefly due to the production of free chlorine.

What are the primary chemical pollutants that create acid rain?

What is the total pressure (torr)inside a container that contains a gas at 3.18 × 103 ppm where its partial pressure is ?

The mole fraction of nitrous oxide in dry air near sea level is 0.00000050.The concentration of nitrous oxide is ________ molecules per liter,assuming an atmospheric pressure of 739 torr and a temperature of 29.5 °C.

Acid rain typically has a pH of about ________.

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

The cumulative result of carbon dioxide,methane,and ozone in the troposphere on atmospheric temperatures is referred to as ________.

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

Nitric oxide arises from auto emissions and reacts with oxygen to produce which reacts with sunlight to produce atoms which react with oxygen to produce .

The lime-soda process is ________ being added to water to cause precipitation of magnesium as Mg(OH)₂ and is used for large-scale water-softening operations.

In the troposphere,temperature with increasing altitude,while in the stratosphere,temperature with increasing altitude.

In the equation below,M is most likely ________. O + O₂ + M → O₃ + M^*

What is the total pressure (torr)inside a container that contains a gas at 3.18 × 10³ ppm where its partial pressure is ?

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