Question 1

Raising the temperature of a reaction mixture is the same as increasing the ________ of the reacting molecules.

Accepted Answer

The answer of Raising the temperature of a reaction mixture...

Question 2

Recent evidence indicates that petroleum is derived from

Accepted Answer

A)   plants.
B)   microscopic land animals.
C)   microscopic marine animals.
D)   decomposition of volcanic ash.E) C) and D)
F) B) and D)

Question 3

Biomass may be burned directly or chemically converted to a more convenient form (liquid or gas) . Which of the following statements is true?

Accepted Answer

A)   The conversion of biomass to a more convenient form improves the overall efficiency of the energy conversion.
B)   The conversion of biomass to a more convenient form decreases the overall efficiency of the energy conversion.
C)   The conversion of biomass to a more convenient form does not affect the overall efficiency. Energy is conserved!
D)   All of the above statements are false.E) A) and C)
F) B) and C)

Question 4

A fuel cell is an electrochemical device that

Accepted Answer

A)   produces fuels from water.
B)   burns gasoline to produce heat.
C)   converts coal to a gas.
D)   converts chemical energy directly to electrical energy.E) A) and B)
F) All of the above

Question 5

If very pure silicon is doped with a small amount of boron, the resulting crystal is called a(n)

Accepted Answer

A)   solar cell.
B)   n-type semiconductor
C)   p-type semiconductor
D)   battery.E) A) and B)
F) B) and D)

Question 6

Coal liquefaction and gasification have the advantage of producing gases and liquids that are easy to transport.

Accepted Answer

A) True 
 B)False

Question 7

The most abundant fossil fuel in the United States is

Accepted Answer

A)   coal.
B)   natural gas.
C)   petroleum.
D)   wood.E) C) and D)
F) All of the above

Question 8

Which problem do all power plants have in common?

Accepted Answer

A)   excess capacity
B)   release of radioactivity
C)   sulfur dioxide emission
D)   thermal pollutionE) None of the above
F) All of the above

Question 9

The solar energy-absorbing molecules of plants that power photosynthesis are called

Accepted Answer

A)   carbohydrates.
B)   photovoltaics.
C)   solarases.
D)   chlorophylls.E) A) and B)
F) A) and D)

Question 10

The most energy efficient method for converting biomass into useful energy is to

Accepted Answer

A)   ferment sugars and starches from plants to form ethanol, which can be burned.
B)   distill wood in the absence of air to form methanol, which can be burned.
C)   use bacteria to break down plant material to produce methane.
D)   burn the plant material directly.E) A) and B)
F) A) and C)

Question 11

The conversion of coal to gas results in the production of synthesis gas. Synthesis gas is a mixture of

Accepted Answer

A)   C and H2O.
B)   CH4 and H2O.
C)   CO and H2.
D)   CH4 and H2.E) All of the above
F) A) and C)

Question 12

The United States has 5% of the world's population and uses 20% of the world's energy.

Accepted Answer

A) True 
 B)False

Question 13

Control rods in a nuclear reactor are used to

Accepted Answer

A)   absorb neutrons and slow down fission.
B)   absorb neutrons and speed up fission.
C)   release neutrons and slow down fission.
D)   release neutrons and speed up fission.E) A) and B)
F) B) and D)

Question 14

Discuss the role of conservation in reducing energy consumption. Where could significant energy savings be made in the United States?

Accepted Answer

Conservation plays a crucial role in red...

Question 15

The heating of large hydrocarbon compounds with a catalyst in the absence of oxygen is called

Accepted Answer

A)   cracking.
B)   catalysis.
C)   reforming.
D)   flocculation.E) B) and C)
F) A) and D)

Question 16

When petroleum is separated in a distillation tower, the fraction that does not vaporize is

Accepted Answer

A)   petroleum jelly.
B)   asphalt.
C)   lubricants.
D)   heating oil.E) All of the above
F) C) and D)

Question 17

World-wide consumption of energy is expected to increase by nearly 50% between 2007 and 2035.

Accepted Answer

A) True 
 B)False

Question 18

The basic process for converting coal to a synthetic gaseous fuel involves

Accepted Answer

A)   the hydrogenation of carbon.
B)   the reduction of carbon by hydrogen.
C)   the oxidation of carbon.
D)   the reduction of carbon by oxygen.E) None of the above
F) B) and C)

Question 19

Deuterium is an isotope of hydrogen that has 1 neutron.

Accepted Answer

A) True 
 B)False

Question 20

The decomposition of 2 mol of water to hydrogen and oxygen requires 137 kcal of energy. The reaction of hydrogen and oxygen to form 2 mol of water

Accepted Answer

A)   requires 137 kcal.
B)   releases 137 kcal.
C)   requires more than 137 kcal.
D)   releases more than 137 kcal.E) A) and D)
F) C) and D)

Exam 15: Energy

Raising the temperature of a reaction mixture is the same as increasing the ________ of the reacting molecules.

Correct AnswerverifiedShow Answer

The United States has 5% of the world's population and uses 20% of the world's energy.

Correct AnswerverifiedShow Answer

The most abundant fossil fuel in the United States is

Correct AnswerverifiedShow Answer

The solar energy-absorbing molecules of plants that power photosynthesis are called

Correct AnswerverifiedShow Answer

The basic process for converting coal to a synthetic gaseous fuel involves

Correct AnswerverifiedShow Answer

Which problem do all power plants have in common?

Correct AnswerverifiedShow Answer

If very pure silicon is doped with a small amount of boron, the resulting crystal is called a(n)

Correct AnswerverifiedShow Answer

The decomposition of 2 mol of water to hydrogen and oxygen requires 137 kcal of energy. The reaction of hydrogen and oxygen to form 2 mol of water

Correct AnswerverifiedShow Answer

Deuterium is an isotope of hydrogen that has 1 neutron.

Correct AnswerverifiedShow Answer

The conversion of coal to gas results in the production of synthesis gas. Synthesis gas is a mixture of

Correct AnswerverifiedShow Answer

When petroleum is separated in a distillation tower, the fraction that does not vaporize is

Correct AnswerverifiedShow Answer

World-wide consumption of energy is expected to increase by nearly 50% between 2007 and 2035.

Correct AnswerverifiedShow Answer

Discuss the role of conservation in reducing energy consumption. Where could significant energy savings be made in the United States?

Correct AnswerAnswered by ExamLex AIConservation plays a crucial role in red...View AnswerShow Answer

Control rods in a nuclear reactor are used to

Correct AnswerverifiedShow Answer

Biomass may be burned directly or chemically converted to a more convenient form (liquid or gas) . Which of the following statements is true?

Correct AnswerverifiedShow Answer

A fuel cell is an electrochemical device that

Correct AnswerverifiedShow Answer

The heating of large hydrocarbon compounds with a catalyst in the absence of oxygen is called

Correct AnswerverifiedShow Answer

Coal liquefaction and gasification have the advantage of producing gases and liquids that are easy to transport.

Correct AnswerverifiedShow Answer

The most energy efficient method for converting biomass into useful energy is to

Correct AnswerverifiedShow Answer

Recent evidence indicates that petroleum is derived from

Correct AnswerverifiedShow Answer

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Conservation plays a crucial role in red...
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