Question 1

The Voyager space probe determined that Titan, a moon of Saturn, has a temperature of 93.0 K. Calculate its temperature in ° F.

Accepted Answer

A)  − 292 ° F 
B)  − 180 ° F 
C)  − 109 ° F 
D)  − 87 ° F 
E)  − 68.93 ° F 
A)  − 292 ° F 
B)  − 180 ° F 
C)  − 109 ° F 
D)  − 87 ° F 
E)  − 68.93 ° F A

Question 2

Calculate the energy generated in kilowatt-hours if the burning of 0.562 g of graphite produces 18.0 kJ of heat.

Accepted Answer

A)  5 × 10 − 6 kWh 
B)  5 × 10 − 5 kWh 
C)  5 × 10 − 4 kWh 
D)  5 × 10 − 3 kWh 
E)  5 × 103 kWh 
A)  5 × 10 − 6 kWh 
B)  5 × 10 − 5 kWh 
C)  5 × 10 − 4 kWh 
D)  5 × 10 − 3 kWh 
E)  5 × 103 kWh D

Question 3

Which of these is/are the  correct unit(s) for measuring power?
I. Joule
II. Joule/second
III. Kilowatt-hour
IV. Watt

Accepted Answer

A)  I only 
B)  II and IV 
C)  II, III, and IV 
D)  I and III 
E)  III and IV 
A)  I only 
B)  II and IV 
C)  II, III, and IV 
D)  I and III 
E)  III and IV B

Question 4

Which of these units of energy is typically used for nutritional measurements?

Accepted Answer

A)  Quad 
B)  Calorie 
C)  Watt 
D)  Kilojoules 
E)  Joule 
A)  Quad 
B)  Calorie 
C)  Watt 
D)  Kilojoules 
E)  Joule

Question 5

What is the coefficient of water when the following equation is balanced?
​
_____ C  5  H  12  + _____ O  2  → _____ CO  2  + _____ H  2  O

Accepted Answer

A)  2 
B)  6 
C)  10 
D)  12 
E)  16 
A)  2 
B)  6 
C)  10 
D)  12 
E)  16

Question 6

The use of energy to move atoms in a nonrandom or orderly fashion is known as _____.

Accepted Answer

A)  heat 
B)  thermodynamics 
C)  enthalpy 
D)  work 
E)  entropy 
A)  heat 
B)  thermodynamics 
C)  enthalpy 
D)  work 
E)  entropy

Question 7

The _____ states that energy can neither be created nor destroyed, only transferred between the system and its surroundings-.

Accepted Answer

A)  first law of thermodynamics 
B)  second law of thermodynamics 
C)  third law of thermodynamics 
D)  law of heat conservation 
E)  law of entropy conservation 
A)  first law of thermodynamics 
B)  second law of thermodynamics 
C)  third law of thermodynamics 
D)  law of heat conservation 
E)  law of entropy conservation

Question 8

If the chemical reaction A + B → C is exothermic, then which of the following is true?

Accepted Answer

A)  The reaction  C → A + B is exothermic. 
B)  The reaction  C → A + B is endothermic. 
C)  The product  C must be a gas. 
D)  The product  C cannot be a gas. 
E)  The reactant A must be a solid. 
A)  The reaction  C → A + B is exothermic. 
B)  The reaction  C → A + B is endothermic. 
C)  The product  C must be a gas. 
D)  The product  C cannot be a gas. 
E)  The reactant A must be a solid.

Question 9

Which of the following processes involve(s) a net decrease of entropy?
I. The condensation of steam
II. The freezing of methanol
III. The evaporation of ethanol
IV. The boiling of water

Accepted Answer

A)  III only 
B)  I and II 
C)  II and III 
D)  I, II, and IV 
E)  I, II, III, and IV 
A)  III only 
B)  I and II 
C)  II and III 
D)  I, II, and IV 
E)  I, II, III, and IV

Question 10

A force that acts through a distance is known as _____.

Accepted Answer

A)  heat 
B)  work 
C)  energy 
D)  enthalpy 
E)  entropy 
A)  heat 
B)  work 
C)  energy 
D)  enthalpy 
E)  entropy

Question 11

Which of these statements concerning the first law of thermodynamics is incorrect ?

Accepted Answer

A)  Energy is neither created nor destroyed. 
B)  A perpetual motion machine cannot exist. 
C)  The total energy of the universe is constant. 
D)  Chemical energy can be converted to thermal energy. 
E)  Energy cannot be converted from one form to another . 
A)  Energy is neither created nor destroyed. 
B)  A perpetual motion machine cannot exist. 
C)  The total energy of the universe is constant. 
D)  Chemical energy can be converted to thermal energy. 
E)  Energy cannot be converted from one form to another .

Question 12

Which of the following compounds is capable of binding to hemoglobin in place of oxygen, affecting the heart and respiratory system

Accepted Answer

A)  CO 
B)  CO2 
C)  NO 
D)  NO2 
E)  H2O 
A)  CO 
B)  CO2 
C)  NO 
D)  NO2 
E)  H2O

Question 13

Which of these does not involve a decrease in the random motion of a system?

Accepted Answer

A)  The burning of logs 
B)  The freezing of methanol 
C)  The cooling of hot milk 
D)  The condensation of water vapor 
E)  The refrigeration of water 
A)  The burning of logs 
B)  The freezing of methanol 
C)  The cooling of hot milk 
D)  The condensation of water vapor 
E)  The refrigeration of water

Question 14

How many joules of heat are produced from burning methane that releases 125 kJ heat?

Accepted Answer

A)  0.125 J 
B)  1.25 J 
C)  12.5 J 
D)  125 J 
E)  125,000 J 
A)  0.125 J 
B)  1.25 J 
C)  12.5 J 
D)  125 J 
E)  125,000 J

Question 15

Which of the following is true of photosynthesis?

Accepted Answer

A)  It requires energy and is therefore exothermic. 
B)  It requires energy and is therefore endothermic. 
C)  It releases energy and is therefore exothermic. 
D)  It releases energy and is therefore endothermic. 
E)  It does not involve a change in energy. 
A)  It requires energy and is therefore exothermic. 
B)  It requires energy and is therefore endothermic. 
C)  It releases energy and is therefore exothermic. 
D)  It releases energy and is therefore endothermic. 
E)  It does not involve a change in energy.

Question 16

Which of the following problems is not associated with acid rain?

Accepted Answer

A)  Accelerated rusting 
B)  Building damage 
C)  Landmark destruction 
D)  Decreased visibility 
E)  Greenhouse effect 
A)  Accelerated rusting 
B)  Building damage 
C)  Landmark destruction 
D)  Decreased visibility 
E)  Greenhouse effect

Question 17

Calculate the energy generated in kilowatt-hours if the burning of 2.5 g of methane produces 125 kJ of heat.

Accepted Answer

A)  3.5 × 102 kWh 
B)  3.5 × 10 − 1 kWh 
C)  3.5 × 10 − 2 kWh 
D)  3.5 × 10 − 3 kWh 
E)  3.5 × 10 − 4 kWh 
A)  3.5 × 102 kWh 
B)  3.5 × 10 − 1 kWh 
C)  3.5 × 10 − 2 kWh 
D)  3.5 × 10 − 3 kWh 
E)  3.5 × 10 − 4 kWh

Question 18

How much energy in joules will a 50-Watt light bulb consume in 7 hours?

Accepted Answer

A)  3.5 × 103 joules 
B)  350 joules 
C)  1.26 × 109 joules 
D)  1.26 × 106 joules 
E)  126 joules 
A)  3.5 × 103 joules 
B)  350 joules 
C)  1.26 × 109 joules 
D)  1.26 × 106 joules 
E)  126 joules

Question 19

Which of the following compounds is not produced during the combustion of fossil fuels?

Accepted Answer

A)  CO 
B)  CO2 
C)  NO 
D)  O2 
E)  H2O 
A)  CO 
B)  CO2 
C)  NO 
D)  O2 
E)  H2O

Question 20

_____ of the energy released during the combustion of gasoline contributes to the movement of a car.

Accepted Answer

A)  5% to 10% 
B)  15% to 25% 
C)  45% to 50% 
D)  35% to 40% 
E)  75% to 80% 
A)  5% to 10% 
B)  15% to 25% 
C)  45% to 50% 
D)  35% to 40% 
E)  75% to 80%

The Voyager space probe determined that Titan, a moon of Saturn, has a temperature of 93.0 K. Calculate its temperature in ° F.

Calculate the energy generated in kilowatt-hours if the burning of 0.562 g of graphite produces 18.0 kJ of heat.

Which of these is/are the correct unit(s) for measuring power? I. Joule II. Joule/second III. Kilowatt-hour IV. Watt

Which of these units of energy is typically used for nutritional measurements?

What is the coefficient of water when the following equation is balanced? ___ C ₅ H ₁₂ + _ O ₂ → _ CO ₂ + ___ H ₂ O

The use of energy to move atoms in a nonrandom or orderly fashion is known as _____.

The _____ states that energy can neither be created nor destroyed, only transferred between the system and its surroundings-.

If the chemical reaction A + B → C is exothermic, then which of the following is true?

Which of the following processes involve(s) a net decrease of entropy? I. The condensation of steam II. The freezing of methanol III. The evaporation of ethanol IV. The boiling of water

A force that acts through a distance is known as _____.

Which of these statements concerning the first law of thermodynamics is incorrect ?

Which of the following compounds is capable of binding to hemoglobin in place of oxygen, affecting the heart and respiratory system

Which of these does not involve a decrease in the random motion of a system?

How many joules of heat are produced from burning methane that releases 125 kJ heat?

Which of the following is true of photosynthesis?

Which of the following problems is not associated with acid rain?

Calculate the energy generated in kilowatt-hours if the burning of 2.5 g of methane produces 125 kJ of heat.

How much energy in joules will a 50-Watt light bulb consume in 7 hours?

Which of the following compounds is not produced during the combustion of fossil fuels?

_____ of the energy released during the combustion of gasoline contributes to the movement of a car.

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Acids and Bases: the Molecules Responsible for Sour and Bitter

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Exam 9: Energy for Today

The Voyager space probe determined that Titan, a moon of Saturn, has a temperature of 93.0 K. Calculate its temperature in ° F.

Calculate the energy generated in kilowatt-hours if the burning of 0.562 g of graphite produces 18.0 kJ of heat.

Which of these is/are the correct unit(s) for measuring power? I. Joule II. Joule/second III. Kilowatt-hour IV. Watt

Which of these units of energy is typically used for nutritional measurements?

What is the coefficient of water when the following equation is balanced? ​ _____ C 5 H 12 + _____ O 2 → _____ CO 2 + _____ H 2 O

The use of energy to move atoms in a nonrandom or orderly fashion is known as _____.

The _____ states that energy can neither be created nor destroyed, only transferred between the system and its surroundings-.

If the chemical reaction A + B → C is exothermic, then which of the following is true?

Which of the following processes involve(s) a net decrease of entropy? I. The condensation of steam II. The freezing of methanol III. The evaporation of ethanol IV. The boiling of water

A force that acts through a distance is known as _____.

Which of these statements concerning the first law of thermodynamics is incorrect ?

Which of the following compounds is capable of binding to hemoglobin in place of oxygen, affecting the heart and respiratory system

Which of these does not involve a decrease in the random motion of a system?

How many joules of heat are produced from burning methane that releases 125 kJ heat?

Which of the following is true of photosynthesis?

Which of the following problems is not associated with acid rain?

Calculate the energy generated in kilowatt-hours if the burning of 2.5 g of methane produces 125 kJ of heat.

How much energy in joules will a 50-Watt light bulb consume in 7 hours?

Which of the following compounds is not produced during the combustion of fossil fuels?

_____ of the energy released during the combustion of gasoline contributes to the movement of a car.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

What is the coefficient of water when the following equation is balanced? ___ C ₅ H ₁₂ + _ O ₂ → _ CO ₂ + ___ H ₂ O