Question 1

The temperature of the air on a hot day when the temperature is 108ºF is

Accepted Answer

A) 10ºC 
B) 110ºC 
C) 32 K 
D) 315 K 
E) 420 K 
A) 10ºC 
B) 110ºC 
C) 32 K 
D) 315 K 
E) 420 K

Question 2

A cylinder of volume 50 L contains oxygen gas at a pressure of 2 atm.If nitrogen gas of volume 25 L and at pressure 1 atm is added to the oxygen cylinder,the new pressure is

Accepted Answer

A) 2 atm 
B) 3 atm 
C) 2.5 atm 
D) 3.5 atm 
E) 4 atm 
A) 2 atm 
B) 3 atm 
C) 2.5 atm 
D) 3.5 atm 
E) 4 atm

Question 3

If the absolute temperature of a gas is doubled,what is the change in the rms speed 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   
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

Question 4

Ethyl chloride (C2H5Cl)is used as a refrigerant under certain circumstances.One mole of this substance contains Avogadro's number of

Accepted Answer

A) carbon atoms. 
B) hydrogen atoms. 
C) chlorine atoms. 
D) All of these are correct. 
E) None of these is correct. 
A) carbon atoms. 
B) hydrogen atoms. 
C) chlorine atoms. 
D) All of these are correct. 
E) None of these is correct.

Question 5

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 20S1U1P1$\circ$S1S1P0C and 1 atm.Assuming that it only has the two diatomic gases,N2 and O2,the amount of kinetic energy in the gases is

Accepted Answer

A) 3.6 MJ 
B) 6.1 MJ 
C) 0.25 MJ 
D) 0.41 MJ 
E) none of the above 
A) 3.6 MJ 
B) 6.1 MJ 
C) 0.25 MJ 
D) 0.41 MJ 
E) none of the above

Question 6

The highest and lowest temperatures ever recorded in the United States are 134ºF (California,1913)and -80ºF (Alaska,1971).What are these temperatures in kelvins?

Accepted Answer

A) 407 K and 193 K 
B) 330 K and 211 K 
C) 347 K and 228 K 
D) 340 K and 300 K 
E) 365 K and 246 K 
A) 407 K and 193 K 
B) 330 K and 211 K 
C) 347 K and 228 K 
D) 340 K and 300 K 
E) 365 K and 246 K

Question 7

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 15S1U1P1$\circ$S1S1P0C and 1 atm.When the temperature is increased to 25S1U1P1$\circ$S1S1P0C,the number of molecules that escaped from the room is,assuming that the pressure stays at 1 atm

Accepted Answer

A) 6.1 $\times$ 1026 
B) 2.1 $\times$ 1025 
C) 2.9 $\times$ 1026 
D) 1.2 $\times$ 1028 
E) 7.04 $\times$ 1027 
A) 6.1 $\times$ 1026 
B) 2.1 $\times$ 1025 
C) 2.9 $\times$ 1026 
D) 1.2 $\times$ 1028 
E) 7.04 $\times$ 1027

Question 8

Which of the following statements about absolute zero temperature is true?

Accepted Answer

A) At absolute zero all translational motion of the particles ceases. 
B) At absolute zero all rotational motion of the particles ceases. 
C) Absolute zero is defined at - 273.15S1U1P1$\circ$S1S1P0C. 
D) At absolute zero all the particles are at rest,except for the quantum motion. 
E) All the above. 
A) At absolute zero all translational motion of the particles ceases. 
B) At absolute zero all rotational motion of the particles ceases. 
C) Absolute zero is defined at - 273.15S1U1P1$\circ$S1S1P0C. 
D) At absolute zero all the particles are at rest,except for the quantum motion. 
E) All the above.

Question 9

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 15S1U1P1$\circ$S1S1P0C and 1 atm.Assuming that it only has the two diatomic gases,N2 and O2,how much heat is needed to increase the temperature to 25S1U1P1$\circ$S1S1P0C? (Ignore the loss in air as the temperature heats up.)

Accepted Answer

A) 8.4 $\times$ 104 J 
B) 1.3 $\times$ 105 J 
C) 1.7 $\times$ 105 J 
D) 2.1 $\times$ 105 J 
E) none of the above 
A) 8.4 $\times$ 104 J 
B) 1.3 $\times$ 105 J 
C) 1.7 $\times$ 105 J 
D) 2.1 $\times$ 105 J 
E) none of the above

Question 10

A mass of air is at pressure P and volume V at 1ºC.When it is made to occupy half this volume at three times this pressure,its temperature becomes approximately

Accepted Answer

A) 411ºC 
B) 0.67ºC 
C) 1.5ºC 
D) 6ºC 
E) 411 K 
A) 411ºC 
B) 0.67ºC 
C) 1.5ºC 
D) 6ºC 
E) 411 K

Question 11

The oxygen (molar mass = 32 g/mol)and nitrogen (molar mass = 28 g/mol)molecules in this room have equal average

Accepted Answer

A) kinetic energies,but the oxygen molecules are faster. 
B) kinetic energies,but the oxygen molecules are slower. 
C) kinetic energies and speeds. 
D) speeds,but the oxygen molecules have a higher average kinetic energy. 
E) speeds,but the oxygen molecules have a lower average kinetic energy. 
A) kinetic energies,but the oxygen molecules are faster. 
B) kinetic energies,but the oxygen molecules are slower. 
C) kinetic energies and speeds. 
D) speeds,but the oxygen molecules have a higher average kinetic energy. 
E) speeds,but the oxygen molecules have a lower average kinetic energy.

Question 12

Which of the following is an assumption that is made in the kinetic theory of gases?

Accepted Answer

A) Molecules are not described by Newton's laws. 
B) Molecules make up only a small fraction of the volume occupied by a gas. 
C) Molecules collide inelastically. 
D) The total number of molecules is actually very small. 
E) There are forces acting on the molecules at all times. 
A) Molecules are not described by Newton's laws. 
B) Molecules make up only a small fraction of the volume occupied by a gas. 
C) Molecules collide inelastically. 
D) The total number of molecules is actually very small. 
E) There are forces acting on the molecules at all times.

Question 13

If it is known that two bodies are in thermal equilibrium,one can conclude that

Accepted Answer

A) they must be in thermal equilibrium with a third body. 
B) there must be a net heat flow between them. 
C) the bodies must be at different temperatures. 
D) some shared physical property must be changing. 
E) they must be at the same temperature. 
A) they must be in thermal equilibrium with a third body. 
B) there must be a net heat flow between them. 
C) the bodies must be at different temperatures. 
D) some shared physical property must be changing. 
E) they must be at the same temperature.

Question 14

A cylinder contains oxygen gas at a temperature of 7ºC and a pressure of 15 atm in a volume of 100 L.A fitted piston is lowered into the cylinder,decreasing the volume occupied by the gas to 80 L and raising the temperature to 40ºC.The gas pressure is now approximately

Accepted Answer

A) 3040 atm 
B) 595 atm 
C) 108 atm 
D) 21 atm 
E) 17 atm 
A) 3040 atm 
B) 595 atm 
C) 108 atm 
D) 21 atm 
E) 17 atm

Question 15

Two cylinders are connected by a small tube which has a needle valve in the middle.One cylinder contains 4He gas,and the other cylinder contains CO2 gas.The gases are at the same temperature,pressure and volume.The lids that seal the gases in are free to move up or down.When the valve is opened,what happens to the volume in each cylinder?

Accepted Answer

A) The volumes do not change. 
B) The CO2 volume decreases and the 4He increases. 
C) The CO2 volume increases and the 4He decreases. 
D) What happens depends on the initial temperature. 
E) What happens depends on the initial pressure. 
A) The volumes do not change. 
B) The CO2 volume decreases and the 4He increases. 
C) The CO2 volume increases and the 4He decreases. 
D) What happens depends on the initial temperature. 
E) What happens depends on the initial pressure.

Question 16

The air in a balloon occupies a volume of 0.10 m3 when at a temperature of 27ºC and a pressure of 1.2 atm.What is the balloon's volume at 7ºC and 1.0 atm? (The amount of gas remains constant.)

Accepted Answer

A) 0.022 m3  
B) 0.078 m3  
C) 0.089 m3  
D) 0.11 m3  
E) 0.13 m3  
A) 0.022 m3  
B) 0.078 m3  
C) 0.089 m3  
D) 0.11 m3  
E) 0.13 m3

Question 17

Calculate the point on the Fahrenheit scale when numerically it is 100 degrees larger than that of the Celsius scale for the same temperature.

Accepted Answer

A) 85 
B) 265 
C) 185 
D) 165 
E) no such point exists 
A) 85 
B) 265 
C) 185 
D) 165 
E) no such point exists

Question 18

When the temperature of an ideal gas is increased from 300 K to 400 K,the average kinetic energy of the gas molecules increases by a factor of

Accepted Answer

A) 1.15 
B) 1.33 
C) 1.54 
D) 1.78 
E) 2.47 
A) 1.15 
B) 1.33 
C) 1.54 
D) 1.78 
E) 2.47

Exam 17: Temperature and the Kinetic Theory of Gases

The temperature of the air on a hot day when the temperature is 108ºF is

A cylinder of volume 50 L contains oxygen gas at a pressure of 2 atm.If nitrogen gas of volume 25 L and at pressure 1 atm is added to the oxygen cylinder,the new pressure is

If the absolute temperature of a gas is doubled,what is the change in the rms speed of its molecules?

Ethyl chloride (C2H5Cl)is used as a refrigerant under certain circumstances.One mole of this substance contains Avogadro's number of

A room measures 3 m ×\times× 4 m ×\times× 2 m and is at 20 ∘\circ∘ C and 1 atm.Assuming that it only has the two diatomic gases,N2 and O2,the amount of kinetic energy in the gases is

The highest and lowest temperatures ever recorded in the United States are 134ºF (California,1913)and -80ºF (Alaska,1971).What are these temperatures in kelvins?

A room measures 3 m ×\times× 4 m ×\times× 2 m and is at 15 ∘\circ∘ C and 1 atm.When the temperature is increased to 25 ∘\circ∘ C,the number of molecules that escaped from the room is,assuming that the pressure stays at 1 atm

Which of the following statements about absolute zero temperature is true?

A room measures 3 m ×\times× 4 m ×\times× 2 m and is at 15 ∘\circ∘ C and 1 atm.Assuming that it only has the two diatomic gases,N2 and O2,how much heat is needed to increase the temperature to 25 ∘\circ∘ C? (Ignore the loss in air as the temperature heats up.)

A mass of air is at pressure P and volume V at 1ºC.When it is made to occupy half this volume at three times this pressure,its temperature becomes approximately

The oxygen (molar mass = 32 g/mol)and nitrogen (molar mass = 28 g/mol)molecules in this room have equal average

Which of the following is an assumption that is made in the kinetic theory of gases?

If it is known that two bodies are in thermal equilibrium,one can conclude that

A cylinder contains oxygen gas at a temperature of 7ºC and a pressure of 15 atm in a volume of 100 L.A fitted piston is lowered into the cylinder,decreasing the volume occupied by the gas to 80 L and raising the temperature to 40ºC.The gas pressure is now approximately

The air in a balloon occupies a volume of 0.10 m3 when at a temperature of 27ºC and a pressure of 1.2 atm.What is the balloon's volume at 7ºC and 1.0 atm? (The amount of gas remains constant.)

Calculate the point on the Fahrenheit scale when numerically it is 100 degrees larger than that of the Celsius scale for the same temperature.

When the temperature of an ideal gas is increased from 300 K to 400 K,the average kinetic energy of the gas molecules increases by a factor of

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Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

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Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

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Static Equilibrium and Elasticity

Fluids

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Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

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Wave Particle Duality and Quantum Physics

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Ethyl chloride (C₂H₅Cl)is used as a refrigerant under certain circumstances.One mole of this substance contains Avogadro's number of

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 20^$\circ$C and 1 atm.Assuming that it only has the two diatomic gases,N₂ and O₂,the amount of kinetic energy in the gases is

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 15^$\circ$C and 1 atm.When the temperature is increased to 25^$\circ$C,the number of molecules that escaped from the room is,assuming that the pressure stays at 1 atm

A room measures 3 m $\times$ 4 m $\times$ 2 m and is at 15^$\circ$C and 1 atm.Assuming that it only has the two diatomic gases,N₂ and O₂,how much heat is needed to increase the temperature to 25^$\circ$C? (Ignore the loss in air as the temperature heats up.)

The air in a balloon occupies a volume of 0.10 m³ when at a temperature of 27ºC and a pressure of 1.2 atm.What is the balloon's volume at 7ºC and 1.0 atm? (The amount of gas remains constant.)