Question 1

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 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 nmF) A) and C)
G) C) and D)

Question 3

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)   2.44F) C) and D)
G) A) and D)

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)   OF) B) and E)
G) C) and D)

Question 5

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 cycleF) C) and D)
G) B) and D)

Question 6

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

Accepted Answer

A)   SO3
B)   CO2
C)   BaO
D)   NO2E) All of the above
F) C) and D)

Question 7

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 flareF) C) and D)
G) A) and D)

Question 8

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.F) B) and C)
G) B) and E)

Question 9

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.F) B) and E)
G) None of the above

Question 10

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 forestsF) B) and D)
G) C) and D)

Question 11

________ 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 12

The Earth's core consists mainly of

Accepted Answer

A)   Ni.
B)   O.
C)   Al.
D)   Si.
E)   Fe.F) C) and D)
G) None of the above

Question 13

How many different ways can a CO2 molecule vibrate?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   millionsF) C) and D)
G) None of the above

Question 14

Which of the following does not readily interact with ozone?

Accepted Answer

A)   Chlorine
B)   Nitrogen oxides
C)   Chlorine nitrate
D)   Carbon fluoridesE) A) and B)
F) A) and C)

Question 15

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.F) None of the above
G) B) and C)

Question 16

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.F) C) and D)
G) B) and E)

Question 17

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.F) A) and B)
G) A) and C)

Question 18

The principal contributor to acid rain is

Accepted Answer

A)   CO2.
B)   SO2.
C)   O3.
D)   NO2.E) All of the above
F) C) and D)

Question 19

How many different ways can water vibrate?

Accepted Answer

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

Question 20

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.F) A) and E)
G) B) and D)

Exam 21: Environmental Chemistry

Why do molecules become IR-active?

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

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

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How many different ways can water vibrate?

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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?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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)

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The Earth's core consists mainly of

Correct AnswerverifiedShow Answer

How many different ways can a CO2 molecule vibrate?

Correct AnswerverifiedShow Answer

Plants extract phosphate from the soil

Correct AnswerverifiedShow Answer

Which of the following does not readily interact with ozone?

Correct AnswerverifiedShow Answer

Volcanoes

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The principal contributor to acid rain is

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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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?

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

Correct Answer
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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)

Correct Answer
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Correct Answer
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How many different ways can a CO₂ molecule vibrate?

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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?

Correct Answer
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Correct Answer
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