Question 1

Which of the following is not responsible for the formation and/or release of methane into the atmosphere?

Accepted Answer

A)   Aerobic bacteria
B)   Cows
C)   Landfills
D)   Mining
E)   TermitesF) A) and B)
G) B) and C) A

Question 2

Which of the following is not a greenhouse gas?

Accepted Answer

A)   CO2
B)   CH4
C)   H2O
D)   N2O
E)   N2F) C) and D)
G) A) and E)

Question 3

Which of the following chemicals is not used to disinfect water?

Accepted Answer

A)   Chlorine
B)   Sodium hypochlorite
C)   Ozone
D)   Slacked lime
E)   MethaneF) All of the above
G) B) and D)

Question 4

Which of the following energy conversions is correct for the combustion of natural gas?

Accepted Answer

A)   Chemical potential energy to thermal energy.
B)   Thermal energy to mechanical energy.
C)   Mechanical energy to chemical potential energy.
D)   Electrostatic energy to mechanical energy.
E)   Gravitational energy to acoustic energy.F) A) and D)
G) A) and C)

Question 5

The majority of crude oil ends up being used _____.

Accepted Answer

A)   as a solvent
B)   to make fine chemicals
C)   to make plastics
D)   as fuel
E)   to make rubberF) B) and C)
G) B) and D)

Question 6

The majority of electricity generated in the United States is generated from _____.

Accepted Answer

A)   wind power
B)   hydroelectric power
C)   nuclear fission
D)   solar power
E)   fossil fuelsF) D) and E)
G) B) and C)

Question 7

Which of the following releases the largest amount of energy? (Assuming the same quantity for all.)

Accepted Answer

A)   Coal
B)   Crude petroleum
C)   Gasoline
D)   Natural gas
E)   BiomassF) C) and E)
G) C) and D) A

Question 8

Which of the following methods is used for the industrial production of hydrogen?

Accepted Answer

A)   Electrolysis
B)   Electrophoresis
C)   Steam reforming
D)   Liquid reforming
E)   LiquefactionF) A) and B)
G) A) and C)

Question 9

Please state what is wrong with the following statement, "To stop global warming we must eliminate all greenhouse gases."?

Accepted Answer

One of the most important greenhouse gas...

Question 10

Which of the following is the correct electron geometry around the central oxygen in ozone, O3?

Accepted Answer

A)   Linear
B)   Bent
C)   Trigonal planar
D)   Tetrahedral
E)   Trigonal bipyramidalF) A) and E)
G) A) and D)

Question 11

If the complete consumption of 10.3 g of C2H6 liberates -534.4 kJ of heat energy at constant pressure and 25°C, what is ΔrH° for the following reaction 2C2H6(g)  + 7O2(g)  → 4CO2(g)  + H2O(l) 
?

Accepted Answer

A)   -3120 kJ/mol-rxn
B)   -1560 kJ/mol-rxn
C)   -366 kJ/mol-rxn
D)   -183 kJ/mol-rxn
E)   -785 kJ/mol-rxnF) B) and E)
G) None of the above

Question 12

Which of the following water pollutants was responsible for the algal bloom in Lake Erie?

Accepted Answer

A)   Arsenic
B)   Phosphates
C)   Mercury
D)   Fluoride
E)   TrihalomethanesF) B) and E)
G) A) and B) B

Question 13

Arrange the three forms of coal in order of their increasing sulfur content.

Accepted Answer

A)   Anthracite 
B)   Lignite 
C)   Lignite 
D)   Anthracite 
E)   Bituminous < Lignite < AnthraciteF) D) and E)
G) A) and D)

Question 14

Methanol reacts with oils and fats to produce biodiesel through a(n)  _____ reaction.

Accepted Answer

A)   trans-esterification
B)   addition
C)   condensation
D)   alkylation
E)   trans-oxidationF) A) and B)
G) A) and E)

Question 15

One liter of water is mixed with excess calcium carbonate, resulting in the equilibrium below. 
CaCO3(s)  D Ca2+(aq)  + CO32-(aq) 
What is the effect on the solubility of calcium carbonate when aqueous nitric acid is added? (Assume no change in volume.)

Accepted Answer

A)   the solubility of CaCO3 decreases because the acid increases the amount of CO32-.
B)   the solubility of CaCO3 increases because the acid increases the amount of CO32-.
C)   the solubility of CaCO3 decreases because the acid decreases the amount of CO32-.
D)   the solubility of CaCO3 increases because the acid decreases the amount of CO32-.
E)   the solubility of CaCO3 is unchanged.F) A) and B)
G) A) and C)

Question 16

Which of the following statements concerning natural gas is not true?

Accepted Answer

A)   Gas-fired power plants emit up to 40% less carbon dioxide than coal-burning power plants.
B)   70-95% of natural gas consists primarily of ethane (C2H6) .
C)   Combustion of methane does not produce ash.
D)   Large amounts of methane exist in the oceans because methane hydrates.
E)   Natural gas is found deep under the Earth's surface.F) A) and B)
G) C) and E)

Question 17

The pH of the oceans in the 18th century was 8.2. A drop of pH to _____ represents a doubling of the hydronium ion concentration in the oceans.

Accepted Answer

A)   16.4
B)   9.28.0
C)   8.0
D)   7.9
E)   4.1F) B) and C)
G) C) and D)

Question 18

Which of the following is a byproduct of biodiesel production?

Accepted Answer

A)   Methanol
B)   Glycerol
C)   Water
D)   Hydrogen
E)   GlucoseF) A) and B)
G) C) and E)

Question 19

Explain why the melting of Arctic sea ice will not raise the sea level.

Accepted Answer

The volume of the li...

Question 20

Which of the following is the primary source of helium and argon in the atmosphere?

Accepted Answer

A)   Solar wind
B)   Mining operations
C)   Burning of fossil fuels
D)   Radioactive decay
E)   Volcanic eruptionsF) A) and B)
G) A) and C)

Exam 21: Environmental Chemistry: Earths Environment, Energy, and Sustainability

Which of the following is not responsible for the formation and/or release of methane into the atmosphere?

Correct AnswerverifiedA

Which of the following is not a greenhouse gas?

Correct AnswerverifiedShow Answer

Which of the following chemicals is not used to disinfect water?

Correct AnswerverifiedShow Answer

Which of the following energy conversions is correct for the combustion of natural gas?

Correct AnswerverifiedShow Answer

The majority of crude oil ends up being used _____.

Correct AnswerverifiedShow Answer

The majority of electricity generated in the United States is generated from _____.

Correct AnswerverifiedShow Answer

Which of the following releases the largest amount of energy? (Assuming the same quantity for all.)

Correct AnswerverifiedA

Which of the following methods is used for the industrial production of hydrogen?

Correct AnswerverifiedShow Answer

Please state what is wrong with the following statement, "To stop global warming we must eliminate all greenhouse gases."?

Correct AnswerverifiedOne of the most important greenhouse gas...View AnswerShow Answer

Which of the following is the correct electron geometry around the central oxygen in ozone, O3?

Correct AnswerverifiedShow Answer

If the complete consumption of 10.3 g of C2H6 liberates -534.4 kJ of heat energy at constant pressure and 25°C, what is ΔrH° for the following reaction 2C2H6(g) + 7O2(g) → 4CO2(g) + H2O(l) ?

Correct AnswerverifiedShow Answer

Which of the following water pollutants was responsible for the algal bloom in Lake Erie?

Correct AnswerverifiedB

Arrange the three forms of coal in order of their increasing sulfur content.

Correct AnswerverifiedShow Answer

Methanol reacts with oils and fats to produce biodiesel through a(n) _____ reaction.

Correct AnswerverifiedShow Answer

One liter of water is mixed with excess calcium carbonate, resulting in the equilibrium below. CaCO3(s) D Ca2+(aq) + CO32-(aq) What is the effect on the solubility of calcium carbonate when aqueous nitric acid is added? (Assume no change in volume.)

Correct AnswerverifiedShow Answer

Which of the following statements concerning natural gas is not true?

Correct AnswerverifiedShow Answer

The pH of the oceans in the 18th century was 8.2. A drop of pH to _____ represents a doubling of the hydronium ion concentration in the oceans.

Correct AnswerverifiedShow Answer

Which of the following is a byproduct of biodiesel production?

Correct AnswerverifiedShow Answer

Explain why the melting of Arctic sea ice will not raise the sea level.

Correct AnswerverifiedThe volume of the li...View AnswerShow Answer

Which of the following is the primary source of helium and argon in the atmosphere?

Correct AnswerverifiedShow Answer

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A

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A

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One of the most important greenhouse gas...
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If the complete consumption of 10.3 g of C₂H₆ liberates -534.4 kJ of heat energy at constant pressure and 25°C, what is Δ_rH° for the following reaction 2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + H₂O(l) ?

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B

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One liter of water is mixed with excess calcium carbonate, resulting in the equilibrium below. CaCO₃(s) D Ca²⁺(aq) + CO₃^2-(aq) What is the effect on the solubility of calcium carbonate when aqueous nitric acid is added? (Assume no change in volume.)

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The volume of the li...
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