Question 1

Use the following to answer the question: 1 represents the distribution for the higher temperature molecules. B) The point labeled  1  corresponds to the rms speed of the molecules whose temperature is T1. C) The point labeled  2  corresponds to the maximum speed of the molecules whose temperature is T1. D) The point labeled  3  corresponds to the rms speed of the molecules whose temperature is T1. E) None of these is correct." class="answers-bank-image d-inline" rel="preload" >
-The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Accepted Answer

A)  The curve labeled T1 represents the distribution for the higher temperature molecules.
B)  The point labeled "1" corresponds to the rms speed of the molecules whose temperature is T1.
C)  The point labeled "2" corresponds to the maximum speed of the molecules whose temperature is T1.
D)  The point labeled "3" corresponds to the rms speed of the molecules whose temperature is T1.
E)  None of these is correct.F) D) and E)
G) A) and B)

Question 2

A temperature of 14ºF is equivalent to

Accepted Answer

A)  -10ºC
B)  7.77ºC
C)  25.5ºC
D)  26.7ºC
E)  47.7ºCF) A) and B)
G) A) and E)

Question 3

If you plot a graph with Fahrenheit temperatures along the horizontal axis and the corresponding Celsius temperatures along the vertical axis,the slope of the equal-temperature line will be

Accepted Answer

A)  -40 Fº/Cº
B)  32 Fº/Cº
C)  1.8 Fº/Cº
D)  0.56 Fº/Cº
E)  0 Fº/CºF) D) and E)
G) None of the above

Question 4

If both the temperature and the volume of an ideal gas are doubled,the pressure is

Accepted Answer

A)  increased by a factor of 4.
B)  doubled also.
C)  unchanged.
D)  diminished by a factor of ¼.
E)  None of these is correct.F) B) and C)
G) A) and E)

Question 5

At what common Celsius temperature is the rms velocity of oxygen molecules (molar mass = 32 g/mol) double that of hydrogen molecules (molar mass = 2.0 g/mol) ?

Accepted Answer

A)  -50
B)  zero
C)  no such temperature exists
D)  2.0
E)  16F) C) and D)
G) None of the above

Question 6

A thermometer is constructed by filling a small glass tube with a liquid that expands linearly with temperature.The thermometer is then calibrated at 0 ∘\circ∘ C and 100 ∘\circ∘ C,and the scale evenly divided between the two values.Unfortunately a manufacturing defect results in the middle one-third of the tube being narrower,otherwise the tube has uniform diameter.For what range of temperatures is the reading accurate?  \circ C and 100 \circ C,and the scale evenly divided between the two values.Unfortunately a manufacturing defect results in the middle one-third of the tube being narrower,otherwise the tube has uniform diameter.For what range of temperatures is the reading accurate?   A) 0 \circ C to 33 \circ C B) 0 \circ C and 67 \circ C C) 0 \circ C to 33 \circ C and 67 \circ C to 100 \circ C D) 67 \circ C to 100 \circ C E) At no point does this thermometer gives the right reading except at 0 \circ C and 100 \circ C. " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  0 ∘\circ∘ C to 33 ∘\circ∘ C
B)  0 ∘\circ∘ C and 67 ∘\circ∘ C
C)  0 ∘\circ∘ C to 33 ∘\circ∘ C and 67 ∘\circ∘ C to 100 ∘\circ∘ C
D)  67 ∘\circ∘ C to 100 ∘\circ∘ C
E)  At no point does this thermometer gives the right reading except at 0 ∘\circ∘ C and 100 ∘\circ∘ C. F) A) and B)
G) None of the above

Question 7

Which of the following statements about the ideal gas law,PV = nRT,is NOT true?

Accepted Answer

A)  When the temperature of two low density gases,which are initially at the same temperature,pressure and volume,is increased by the same amount,the volume increases by the same amount.
B)  When the volume of two low density gases,which are initially at the same temperature,pressure and volume,is compressed by the same amount,the temperature increases by the same amount.
C)  A P-T plot of any gas at low density intercept the T-axis at the same point.
D)  The intercept at the ordinate for PV/nT vs P plot of any gas is the gas constant.
E)  The ideal gas law is valid for high density of all gases.F) C) and E)
G) A) and B)

Question 8

A temperature difference of 9ºF is the same as a difference of

Accepted Answer

A)  5ºC
B)  9ºC
C)  20ºC
D)  68ºC
E)  100ºCF) A) and B)
G) A) and C)

Question 9

On the basis of the kinetic theory of gases,when the absolute temperature is doubled,the average kinetic energy of the gas molecules changes by a factor of

Accepted Answer

A)  16
B)  2
C)   
D)  4
E)  0.5F) A) and D)
G) B) and D)

Question 10

Normal human body temperature is 98.6ºF.What is the corresponding Celsius temperature?

Accepted Answer

A)  54.8ºC
B)  72.6ºC
C)  40.0ºC
D)  37.0ºC
E)  35.5ºCF) C) and D)
G) None of the above

Question 11

The rms speed of oxygen molecules is 460 m/s at 0ºC.The molecular weight of oxygen is 8 times the molecular weight of helium.The rms speed of helium at 40ºC is approximately

Accepted Answer

A)  3.68 km/s
B)  1.84 km/s
C)  1.40 km/s
D)  880 m/s
E)  440 m/sF) C) and D)
G) A) and B)

Question 12

Use the following to answer the question: 2 represents the distribution for the higher temperature molecules. B) The point labeled  1  corresponds to the rms speed of the molecules whose temperature is T1. C) The point labeled  2  corresponds to the maximum speed of the molecules whose temperature is T1. D) The point labeled  3  corresponds to the average speed of the molecules whose temperature is T1. E) None of these is correct." class="answers-bank-image d-inline" rel="preload" >
-The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Accepted Answer

A)  The curve labeled T2 represents the distribution for the higher temperature molecules.
B)  The point labeled "1" corresponds to the rms speed of the molecules whose temperature is T1.
C)  The point labeled "2" corresponds to the maximum speed of the molecules whose temperature is T1.
D)  The point labeled "3" corresponds to the average speed of the molecules whose temperature is T1.
E)  None of these is correct.F) None of the above
G) A) and D)

Question 13

A device used to measure the speed,v,of molecules is shown below.When the cylinder is rotated,only molecules that are of the right speed will pass through the slanted slot and be pickup by the detector.Drive an expression for the speed v in terms of the angular speed, ω\omegaω , ϕ\phiϕ ,and L.L is the length of the cylinder and  ϕ\phiϕ  is the angle subtended by the slanted slot.

Accepted Answer

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

Question 14

A temperature difference of 5 Cº is the same as a difference of

Accepted Answer

A)  41 Fº
B)  14 Fº
C)  9 Fº
D)  5 Fº
E)  -15 FºF) C) and E)
G) None of the above

Question 15

Doubling the Kelvin temperature of a gas increases which of the following measures of its molecular velocity by a factor of 1.4?

Accepted Answer

A)  the rms speed
B)  the average speed
C)  the most probable speed
D)  All three of these speeds are correct.
E)  None of these is correct.F) B) and D)
G) A) and D)

Question 16

A constant-volume gas thermometer reads 6.66 kPa at the triple point of water.What is the pressure reading at the normal boiling point of water?

Accepted Answer

A)  2.44 kPa
B)  18.2 kPa
C)  9.10 kPa
D)  11.8 kPa
E)  4.87 kPaF) C) and E)
G) A) and E)

Question 17

In a vacuum system,a container is pumped down to a pressure of 1.33  ×	imes×  10-6 Pa at 20ºC.How many molecules of gas are there in 1 cm3 of this container? (Boltzmann's constant k = 1.38  ×	imes×  10-23 J/K)

Accepted Answer

A)  3.3  ×	imes×  108 
B)  4.8  ×	imes×  109 
C)  3.3  ×	imes×  1014 
D)  7.9  ×	imes×  1012 
E)  4.8  ×	imes×  1012  F) A) and B)
G) A) and E)

Question 18

If the absolute temperature of a gas is doubled,what is the change in the average kinetic energy of its molecules?

Accepted Answer

A)  no change
B)  increases by a factor of 2
C)  decreases by a factor of 2
D)  increases by a factor of 
E)  decreases by a factor of F) B) and D)
G) B) and C)

Question 19

Use the following to answer the question: 1 represents the distribution for the higher temperature molecules. B) The point labeled  1  corresponds to the rms speed of the molecules whose temperature is T1. C) The point labeled  2  corresponds to the maximum speed of the molecules whose temperature is T1. D) The point labeled  3  corresponds to the average speed of the molecules whose temperature is T1. E) None of these is correct." class="answers-bank-image d-inline" rel="preload" >
-The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Accepted Answer

A)  The curve labeled T1 represents the distribution for the higher temperature molecules.
B)  The point labeled "1" corresponds to the rms speed of the molecules whose temperature is T1.
C)  The point labeled "2" corresponds to the maximum speed of the molecules whose temperature is T1.
D)  The point labeled "3" corresponds to the average speed of the molecules whose temperature is T1.
E)  None of these is correct.F) A) and B)
G) All of the above

Question 20

Boltzmann's constant,k,has a value of 1.381  ×	imes×  10-23 J/K.What is the significance of the constant?

Accepted Answer

A)  It defines a characteristic energy at the microscopic level given the temperature in kelvins.
B)  It allows the pressure of the gas to be calculated given the volume and temperature.
C)  It measures the average kinetic energy of a molecule at a given temperature for each degree of freedom.
D)  (
A)  and (
B)  
E)  (
A)  and (
C)   F) A) and B)
G) None of the above

Exam 17: Temperature and the Kinetic Theory of Gases

Which of the following statements about the ideal gas law,PV = nRT,is NOT true?

Correct Answer
verified

A temperature difference of 9ºF is the same as a difference of

Correct Answer
verified

If the absolute temperature of a gas is doubled,what is the change in the average kinetic energy of its molecules?

Correct Answer
verified

Doubling the Kelvin temperature of a gas increases which of the following measures of its molecular velocity by a factor of 1.4?

Correct Answer
verified

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct Answer
verified

Normal human body temperature is 98.6ºF.What is the corresponding Celsius temperature?

Correct Answer
verified

A constant-volume gas thermometer reads 6.66 kPa at the triple point of water.What is the pressure reading at the normal boiling point of water?

Correct Answer
verified

On the basis of the kinetic theory of gases,when the absolute temperature is doubled,the average kinetic energy of the gas molecules changes by a factor of

Correct Answer
verified

Correct Answer
verified

If you plot a graph with Fahrenheit temperatures along the horizontal axis and the corresponding Celsius temperatures along the vertical axis,the slope of the equal-temperature line will be

Correct Answer
verified

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct Answer
verified

A temperature difference of 5 Cº is the same as a difference of

Correct Answer
verified

In a vacuum system,a container is pumped down to a pressure of 1.33 $\times$ 10^-6 Pa at 20ºC.How many molecules of gas are there in 1 cm³ of this container? (Boltzmann's constant k = 1.38 $\times$ 10^-23 J/K)

Correct Answer
verified

The rms speed of oxygen molecules is 460 m/s at 0ºC.The molecular weight of oxygen is 8 times the molecular weight of helium.The rms speed of helium at 40ºC is approximately

Correct Answer
verified

At what common Celsius temperature is the rms velocity of oxygen molecules (molar mass = 32 g/mol) double that of hydrogen molecules (molar mass = 2.0 g/mol) ?

Correct Answer
verified

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct Answer
verified

If both the temperature and the volume of an ideal gas are doubled,the pressure is

Correct Answer
verified

Boltzmann's constant,k,has a value of 1.381 $\times$ 10^-23 J/K.What is the significance of the constant?

Correct Answer
verified

A temperature of 14ºF is equivalent to

Correct Answer
verified

Correct Answer
verified

Exam 17: Temperature and the Kinetic Theory of Gases

Which of the following statements about the ideal gas law,PV = nRT,is NOT true?

Correct AnswerverifiedShow Answer

A temperature difference of 9ºF is the same as a difference of

Correct AnswerverifiedShow Answer

If the absolute temperature of a gas is doubled,what is the change in the average kinetic energy of its molecules?

Correct AnswerverifiedShow Answer

Doubling the Kelvin temperature of a gas increases which of the following measures of its molecular velocity by a factor of 1.4?

Correct AnswerverifiedShow Answer

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct AnswerverifiedShow Answer

Normal human body temperature is 98.6ºF.What is the corresponding Celsius temperature?

Correct AnswerverifiedShow Answer

A constant-volume gas thermometer reads 6.66 kPa at the triple point of water.What is the pressure reading at the normal boiling point of water?

Correct AnswerverifiedShow Answer

On the basis of the kinetic theory of gases,when the absolute temperature is doubled,the average kinetic energy of the gas molecules changes by a factor of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If you plot a graph with Fahrenheit temperatures along the horizontal axis and the corresponding Celsius temperatures along the vertical axis,the slope of the equal-temperature line will be

Correct AnswerverifiedShow Answer

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct AnswerverifiedShow Answer

A temperature difference of 5 Cº is the same as a difference of

Correct AnswerverifiedShow Answer

In a vacuum system,a container is pumped down to a pressure of 1.33 ×\times× 10-6 Pa at 20ºC.How many molecules of gas are there in 1 cm3 of this container? (Boltzmann's constant k = 1.38 ×\times× 10-23 J/K)

Correct AnswerverifiedShow Answer

The rms speed of oxygen molecules is 460 m/s at 0ºC.The molecular weight of oxygen is 8 times the molecular weight of helium.The rms speed of helium at 40ºC is approximately

Correct AnswerverifiedShow Answer

At what common Celsius temperature is the rms velocity of oxygen molecules (molar mass = 32 g/mol) double that of hydrogen molecules (molar mass = 2.0 g/mol) ?

Correct AnswerverifiedShow Answer

Use the following to answer the question: -The figure shows the distribution of the molecular speeds of a gas for two different temperatures.

Correct AnswerverifiedShow Answer

If both the temperature and the volume of an ideal gas are doubled,the pressure is

Correct AnswerverifiedShow Answer

Boltzmann's constant,k,has a value of 1.381 ×\times× 10-23 J/K.What is the significance of the constant?

Correct AnswerverifiedShow Answer

A temperature of 14ºF is equivalent to

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

In a vacuum system,a container is pumped down to a pressure of 1.33 $\times$ 10^-6 Pa at 20ºC.How many molecules of gas are there in 1 cm³ of this container? (Boltzmann's constant k = 1.38 $\times$ 10^-23 J/K)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Boltzmann's constant,k,has a value of 1.381 $\times$ 10^-23 J/K.What is the significance of the constant?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified