Question 1

Volcanoes

Accepted Answer

A)  produce about two-thirds of the sulfur in the air. 
B)  are involved in the production of sulfuric acid "aerosols", which persist above the troposphere. 
C)  produce localized areas of lower temperature. 
D)  All of the choices are correct. 
E)  None of these choices. 
A)  produce about two-thirds of the sulfur in the air. 
B)  are involved in the production of sulfuric acid "aerosols", which persist above the troposphere. 
C)  produce localized areas of lower temperature. 
D)  All of the choices are correct. 
E)  None of these choices.

Question 2

The bond energy of N2 is 160 kJ/mol. What is the wavelength of a photon that can cause the dissociation of a N2 molecule? (h = 6.63 × 10-34J s; c = 3.0 × 108m/s and Avogadro's number = 6.022 × 1023 molecules/mole)

Accepted Answer

A)  749 nm 
B)  366 nm 
C)  233 nm 
D)  375 nm 
E)  650 nm 
A)  749 nm 
B)  366 nm 
C)  233 nm 
D)  375 nm 
E)  650 nm

Question 3

Which of the following does not readily interact with ozone?

Accepted Answer

A)  Chlorine 
B)  Nitrogen oxides 
C)  Chlorine nitrate 
D)  Carbon fluorides 
A)  Chlorine 
B)  Nitrogen oxides 
C)  Chlorine nitrate 
D)  Carbon fluorides

Question 4

What element is the most abundant by mass in Earth's crust?

Accepted Answer

A)  Fe 
B)  H 
C)  K 
D)  P 
E)  O 
A)  Fe 
B)  H 
C)  K 
D)  P 
E)  O

Question 5

The Earth's core consists mainly of

Accepted Answer

A)  Ni. 
B)  O. 
C)  Al. 
D)  Si. 
E)  Fe. 
A)  Ni. 
B)  O. 
C)  Al. 
D)  Si. 
E)  Fe.

Question 6

How many different ways can a CO2 molecule vibrate?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  millions 
A)  1 
B)  2 
C)  3 
D)  4 
E)  millions

Question 7

Heat is radiated from Earth to space predominately in the form of

Accepted Answer

A)  infrared radiation. 
B)  radioactivity. 
C)  visible light. 
D)  solar flares. 
E)  UV radiation. 
A)  infrared radiation. 
B)  radioactivity. 
C)  visible light. 
D)  solar flares. 
E)  UV radiation.

Question 8

How many different ways can water vibrate?

Accepted Answer

The answer of How many different ways can water vibrate?...

Question 9

Why do molecules become IR-active?

Accepted Answer

A)  Because they are in constant motion. 
B)  Because they can absorb IR radiation (a photon of a specific wavelength in the IR region) because their dipole moments constantly change as the bond lengths change. 
C)  Because they vibrate at low temperatures. 
D)  Because their net dipole is zero. 
E)  Because they are very close together. 
A)  Because they are in constant motion. 
B)  Because they can absorb IR radiation (a photon of a specific wavelength in the IR region) because their dipole moments constantly change as the bond lengths change. 
C)  Because they vibrate at low temperatures. 
D)  Because their net dipole is zero. 
E)  Because they are very close together.

Question 10

What is defined as the conversion of molecular nitrogen into nitrogen compounds?

Accepted Answer

A)  nitrogen fixation 
B)  nitrogen conversion 
C)  nitrogenation 
D)  nitrogen turnover 
E)  nitrogen cycle 
A)  nitrogen fixation 
B)  nitrogen conversion 
C)  nitrogenation 
D)  nitrogen turnover 
E)  nitrogen cycle

Question 11

Which one of the following would slow the rate of increase of atmospheric CO2?

Accepted Answer

A)  building and operating more coal-fired power plants 
B)  more use of catalytic converters in cars to produce complete combustion 
C)  use of hydrogen fuel produced using solar or nuclear energy 
D)  conversion of nuclear power plants to methane-burning power plants 
E)  clearing and burning the tropical rain forests 
A)  building and operating more coal-fired power plants 
B)  more use of catalytic converters in cars to produce complete combustion 
C)  use of hydrogen fuel produced using solar or nuclear energy 
D)  conversion of nuclear power plants to methane-burning power plants 
E)  clearing and burning the tropical rain forests

Question 12

The average person breathes about 20 m3 of air a day. What weight of particulates would a person breathe in a day if the particulate level were 400 micrograms per cubic meter?

Accepted Answer

Question 13

The principal contributor to acid rain is

Accepted Answer

A)  CO2. 
B)  SO2. 
C)  O3. 
D)  NO2. 
A)  CO2. 
B)  SO2. 
C)  O3. 
D)  NO2.

Question 14

Plants extract phosphate from the soil

Accepted Answer

A)  by converting it to the dihydrogen phosphate ion by addition of acid to the soil near roots. 
B)  by converting it to phosphoric acid. 
C)  by osmosis. 
D)  by leaching. 
E)  by fixation. 
A)  by converting it to the dihydrogen phosphate ion by addition of acid to the soil near roots. 
B)  by converting it to phosphoric acid. 
C)  by osmosis. 
D)  by leaching. 
E)  by fixation.

Question 15

What is the name given to the spectacular celestial light shown in the sky resulting from electrons and protons in space ejected from solar eruptions?

Accepted Answer

A)  auroras 
B)  astral lights 
C)  stellar explosions 
D)  cosmic flares 
E)  solar flare 
A)  auroras 
B)  astral lights 
C)  stellar explosions 
D)  cosmic flares 
E)  solar flare

Question 16

Which of the following is emitted into the atmosphere when a volcano erupts?

Accepted Answer

A)  H2S 
B)  N2 
C)  HCl 
D)  sulfuric acid aerosol 
E)  All of the answers are correct. 
A)  H2S 
B)  N2 
C)  HCl 
D)  sulfuric acid aerosol 
E)  All of the answers are correct.

Question 17

________ is the major mechanism by which molecular oxygen is regenerated from carbon dioxide and water.

Accepted Answer

The answer of ________ is the major mechanism by which...

Question 18

Which of the following oxides would not react with water to form an acidic solution?

Accepted Answer

A)  SO3 
B)  CO2 
C)  BaO 
D)  NO2 
A)  SO3 
B)  CO2 
C)  BaO 
D)  NO2

Question 19

The process in which a gaseous substance is converted into a condensed, more usable chemical substance is called

Accepted Answer

A)  differentiation. 
B)  liquefaction. 
C)  fixation. 
D)  deposition. 
E)  remediation. 
A)  differentiation. 
B)  liquefaction. 
C)  fixation. 
D)  deposition. 
E)  remediation.

Question 20

Due to a highway accident, 150 L of concentrated hydrochloric acid (12.0 M) is released into a lake containing 5.0 × 105 m3 of water. If the pH of this lake was 7.0 prior to the accident, what is the pH of the lake following the accident?

Accepted Answer

A)  5.44 
B)  8.56 
C)  8.44 
D)  5.56 
E)  2.44 
A)  5.44 
B)  8.56 
C)  8.44 
D)  5.56 
E)  2.44

Exam 21: Environmental Chemistry

Volcanoes

The bond energy of N2 is 160 kJ/mol. What is the wavelength of a photon that can cause the dissociation of a N2 molecule? (h = 6.63 × 10-34J s; c = 3.0 × 108m/s and Avogadro's number = 6.022 × 1023 molecules/mole)

Which of the following does not readily interact with ozone?

What element is the most abundant by mass in Earth's crust?

The Earth's core consists mainly of

How many different ways can a CO2 molecule vibrate?

Heat is radiated from Earth to space predominately in the form of

How many different ways can water vibrate?

Why do molecules become IR-active?

What is defined as the conversion of molecular nitrogen into nitrogen compounds?

Which one of the following would slow the rate of increase of atmospheric CO2?

The average person breathes about 20 m3 of air a day. What weight of particulates would a person breathe in a day if the particulate level were 400 micrograms per cubic meter?

The principal contributor to acid rain is

Plants extract phosphate from the soil

What is the name given to the spectacular celestial light shown in the sky resulting from electrons and protons in space ejected from solar eruptions?

Which of the following is emitted into the atmosphere when a volcano erupts?

________ is the major mechanism by which molecular oxygen is regenerated from carbon dioxide and water.

Which of the following oxides would not react with water to form an acidic solution?

The process in which a gaseous substance is converted into a condensed, more usable chemical substance is called

Due to a highway accident, 150 L of concentrated hydrochloric acid (12.0 M) is released into a lake containing 5.0 × 105 m3 of water. If the pH of this lake was 7.0 prior to the accident, what is the pH of the lake following the accident?

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

The bond energy of N₂ is 160 kJ/mol. What is the wavelength of a photon that can cause the dissociation of a N₂ molecule? (h = 6.63 × 10^-34J s; c = 3.0 × 10⁸m/s and Avogadro's number = 6.022 × 10²³ molecules/mole)

How many different ways can a CO₂ molecule vibrate?

Which one of the following would slow the rate of increase of atmospheric CO₂?

The average person breathes about 20 m³ of air a day. What weight of particulates would a person breathe in a day if the particulate level were 400 micrograms per cubic meter?

Due to a highway accident, 150 L of concentrated hydrochloric acid (12.0 M) is released into a lake containing 5.0 × 10⁵ m³ of water. If the pH of this lake was 7.0 prior to the accident, what is the pH of the lake following the accident?