Question 1

Which of the following is not reduced by the use of catalytic converters in the combustion of gasoline?

Accepted Answer

A)  CO2 
B)  Photochemical smog 
C)  CO 
D)  NO 
E)  Partially burned hydrocarbons 
A)  CO2 
B)  Photochemical smog 
C)  CO 
D)  NO 
E)  Partially burned hydrocarbons

Question 2

What percentage of energy use in the United States comes from fossil fuels?

Accepted Answer

A)  25% 
B)  45% 
C)  65% 
D)  82% 
E)  95% 
A)  25% 
B)  45% 
C)  65% 
D)  82% 
E)  95%

Question 3

Which of the following is not an environmental problem produced by the burning of fossil fuels?

Accepted Answer

A)  The formation of smog 
B)  The formation of acid rain 
C)  Elevated levels of NO 
D)  Elevated levels of CO 
E)  Increase in flooding of rivers 
A)  The formation of smog 
B)  The formation of acid rain 
C)  Elevated levels of NO 
D)  Elevated levels of CO 
E)  Increase in flooding of rivers

Question 4

Which of the following is the unit for the amount of energy consumed by a nation?

Accepted Answer

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

Question 5

Which of the following compounds can combine with the moisture in the air, resulting in the formation of acid rain?

Accepted Answer

A)  CO 
B)  PAN 
C)  NO2 
D)  O3 
E)  CO2 
A)  CO 
B)  PAN 
C)  NO2 
D)  O3 
E)  CO2

Question 6

If the normal body temperature is 98.6 ° F, what is the corresponding temperature in Kelvin?

Accepted Answer

A)  23 K 
B)  37 K 
C)  119 K 
D)  177 K 
E)  310. K 
A)  23 K 
B)  37 K 
C)  119 K 
D)  177 K 
E)  310. K

Question 7

Which of the following statements about work is incorrect ?

Accepted Answer

A)  Work is moving atoms in an orderly fashion. 
B)  Work is a force exerted  over some distance. 
C)  Any object possessing energy can perform work. 
D)  Work is dependent on the amount of energy available. 
E)  All of these statements are correct. 
A)  Work is moving atoms in an orderly fashion. 
B)  Work is a force exerted  over some distance. 
C)  Any object possessing energy can perform work. 
D)  Work is dependent on the amount of energy available. 
E)  All of these statements are correct.

Question 8

How many joules of energy does a candy bar with 250 Calories contain?

Accepted Answer

A)  1.05 J 
B)  59.8 J 
C)  1046 J 
D)  5.98 × 104 J 
E)  1.05 × 106 J 
A)  1.05 J 
B)  59.8 J 
C)  1046 J 
D)  5.98 × 104 J 
E)  1.05 × 106 J

Question 9

Which of the following is not a unit to measure energy?

Accepted Answer

A)  Kelvin 
B)  Power 
C)  Quad 
D)  Calorie 
E)  Joule 
A)  Kelvin 
B)  Power 
C)  Quad 
D)  Calorie 
E)  Joule

Question 10

How many kilojoules of heat are released when 54.9 g of manganese is burned to form Mn  3  O  4  (s)? Given that Δ H for the reaction is − 25.3 kJ/g.

Accepted Answer

A)  2.17 kJ 
B)  54.9 kJ 
C)  462 kJ 
D)  924 kJ 
E)  1389 kJ 
A)  2.17 kJ 
B)  54.9 kJ 
C)  462 kJ 
D)  924 kJ 
E)  1389 kJ

Question 11

Which of the following nations leads the world in per capita energy consumption?

Accepted Answer

A)  Russia 
B)  United States 
C)  Canada 
D)  Germany 
E)  Nigeria 
A)  Russia 
B)  United States 
C)  Canada 
D)  Germany 
E)  Nigeria

Question 12

The amount of energy required to raise the temperature of 1 gram of water by 1  o  C is known as _____.

Accepted Answer

A)  quad 
B)  calorie 
C)  watt 
D)  kilojoules 
E)  joule 
A)  quad 
B)  calorie 
C)  watt 
D)  kilojoules 
E)  joule

Question 13

If ethanol boils at a temperature of 78.5 ° C, then calculate its boiling point in ° F.

Accepted Answer

A)  46 ° F 
B)  109.2 ° F 
C)  173.3 ° F 
D)  194 ° F 
E)  372 ° F 
A)  46 ° F 
B)  109.2 ° F 
C)  173.3 ° F 
D)  194 ° F 
E)  372 ° F

Question 14

How many joules of heat must be added to melt a 75-g block iron if it required 12.2 Calories?

Accepted Answer

A)  0.0509 J 
B)  2.92 J 
C)  342 J 
D)  2.92 × 103 J 
E)  5.10  × 104 J 
A)  0.0509 J 
B)  2.92 J 
C)  342 J 
D)  2.92 × 103 J 
E)  5.10  × 104 J

Question 15

Which of the following does not add carbon dioxide to the atmosphere?

Accepted Answer

A)  Forest fires 
B)  Breathing 
C)  Photosynthesis 
D)  Driving cars 
E)  Production of iron and steel 
A)  Forest fires 
B)  Breathing 
C)  Photosynthesis 
D)  Driving cars 
E)  Production of iron and steel

Question 16

The freezing point and the boiling point of methane are − 295 ° F and − 263 ° F, respectively. The temperature at the surface of Titan, a moon of Saturn, is 93 K. If methane exists on the surface of Titan, it will be a _____.

Accepted Answer

A)  gas 
B)  solid 
C)  liquid 
D)  plasma 
E)  None of these 
A)  gas 
B)  solid 
C)  liquid 
D)  plasma 
E)  None of these

Question 17

The combustion of 5.00 g of C  2  H  6  (g) emits 259 kJ of heat at constant pressure. Calculate the enthalpy of combustion, Δ Hcom, for the reaction in kJ/g. ​
2 C2H6(g) + 7 O2(g) → 4 CO2(g) + 6 H2O (l)

Accepted Answer

A)  − 51.8 kJ/g 
B)  − 1295 kJ/g 
C)  − 1550 kJ/g 
D)  − 1667 kJ/g 
E)  − 3110 kJ/g 
A)  − 51.8 kJ/g 
B)  − 1295 kJ/g 
C)  − 1550 kJ/g 
D)  − 1667 kJ/g 
E)  − 3110 kJ/g

Question 18

Gold melts at 1063 ° C. Calculate its melting point in Kelvin.

Accepted Answer

A)  300 K 
B)  572 K 
C)  790 K 
D)  1336 K 
E)  1945 K 
A)  300 K 
B)  572 K 
C)  790 K 
D)  1336 K 
E)  1945 K

Question 19

Which of the following is a cause of global warming?

Accepted Answer

A)  Acid rain 
B)  Catalytic conversion 
C)  Fission 
D)  Greenhouse effect 
E)  Heat capacity 
A)  Acid rain 
B)  Catalytic conversion 
C)  Fission 
D)  Greenhouse effect 
E)  Heat capacity

Question 20

Which of the following statements related to acid rain is incorrect ?

Accepted Answer

A)  Acid rain accelerates the rusting of iron. 
B)  Acid rain contributes to reduced visibility in some areas. 
C)  The formation of highly reactive H −  ions makes the rain acidic. 
D)  Acid rain is formed when SO2 or NOx compounds react with water. 
E)  Acid rain lowers the ability of some trees to grow and fight disease. 
A)  Acid rain accelerates the rusting of iron. 
B)  Acid rain contributes to reduced visibility in some areas. 
C)  The formation of highly reactive H −  ions makes the rain acidic. 
D)  Acid rain is formed when SO2 or NOx compounds react with water. 
E)  Acid rain lowers the ability of some trees to grow and fight disease.

Which of the following is not reduced by the use of catalytic converters in the combustion of gasoline?

What percentage of energy use in the United States comes from fossil fuels?

Which of the following is not an environmental problem produced by the burning of fossil fuels?

Which of the following is the unit for the amount of energy consumed by a nation?

Which of the following compounds can combine with the moisture in the air, resulting in the formation of acid rain?

If the normal body temperature is 98.6 ° F, what is the corresponding temperature in Kelvin?

Which of the following statements about work is incorrect ?

How many joules of energy does a candy bar with 250 Calories contain?

Which of the following is not a unit to measure energy?

How many kilojoules of heat are released when 54.9 g of manganese is burned to form Mn ₃ O ₄ (s)? Given that Δ H for the reaction is − 25.3 kJ/g.

Which of the following nations leads the world in per capita energy consumption?

The amount of energy required to raise the temperature of 1 gram of water by 1 ^o C is known as _____.

If ethanol boils at a temperature of 78.5 ° C, then calculate its boiling point in ° F.

How many joules of heat must be added to melt a 75-g block iron if it required 12.2 Calories?

Which of the following does not add carbon dioxide to the atmosphere?

The freezing point and the boiling point of methane are − 295 ° F and − 263 ° F, respectively. The temperature at the surface of Titan, a moon of Saturn, is 93 K. If methane exists on the surface of Titan, it will be a _____.

The combustion of 5.00 g of C ₂ H ₆ (g) emits 259 kJ of heat at constant pressure. Calculate the enthalpy of combustion, Δ Hcom, for the reaction in kJ/g. 2 C₂H₆(g) + 7 O₂(g) → 4 CO₂(g) + 6 H₂O (l)

Gold melts at 1063 ° C. Calculate its melting point in Kelvin.

Which of the following is a cause of global warming?

Which of the following statements related to acid rain is incorrect ?

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Exam 9: Energy for Today

Which of the following is not reduced by the use of catalytic converters in the combustion of gasoline?

What percentage of energy use in the United States comes from fossil fuels?

Which of the following is not an environmental problem produced by the burning of fossil fuels?

Which of the following is the unit for the amount of energy consumed by a nation?

Which of the following compounds can combine with the moisture in the air, resulting in the formation of acid rain?

If the normal body temperature is 98.6 ° F, what is the corresponding temperature in Kelvin?

Which of the following statements about work is incorrect ?

How many joules of energy does a candy bar with 250 Calories contain?

Which of the following is not a unit to measure energy?

How many kilojoules of heat are released when 54.9 g of manganese is burned to form Mn 3 O 4 (s)? Given that Δ H for the reaction is − 25.3 kJ/g.

Which of the following nations leads the world in per capita energy consumption?

The amount of energy required to raise the temperature of 1 gram of water by 1 o C is known as _____.

If ethanol boils at a temperature of 78.5 ° C, then calculate its boiling point in ° F.

How many joules of heat must be added to melt a 75-g block iron if it required 12.2 Calories?

Which of the following does not add carbon dioxide to the atmosphere?

The freezing point and the boiling point of methane are − 295 ° F and − 263 ° F, respectively. The temperature at the surface of Titan, a moon of Saturn, is 93 K. If methane exists on the surface of Titan, it will be a _____.

The combustion of 5.00 g of C 2 H 6 (g) emits 259 kJ of heat at constant pressure. Calculate the enthalpy of combustion, Δ Hcom, for the reaction in kJ/g. ​ 2 C2H6(g) + 7 O2(g) → 4 CO2(g) + 6 H2O (l)

Gold melts at 1063 ° C. Calculate its melting point in Kelvin.

Which of the following is a cause of global warming?

Which of the following statements related to acid rain is incorrect ?

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

How many kilojoules of heat are released when 54.9 g of manganese is burned to form Mn ₃ O ₄ (s)? Given that Δ H for the reaction is − 25.3 kJ/g.

The amount of energy required to raise the temperature of 1 gram of water by 1 ^o C is known as _____.

The combustion of 5.00 g of C ₂ H ₆ (g) emits 259 kJ of heat at constant pressure. Calculate the enthalpy of combustion, Δ Hcom, for the reaction in kJ/g. 2 C₂H₆(g) + 7 O₂(g) → 4 CO₂(g) + 6 H₂O (l)