Question 1

An ideal gas constant volume gas thermometer has pressure 2.00 atm at the triple point of water. What is the temperature when the pressure in the thermometer is 6.00 atm?

Accepted Answer

A) 137 K 
B) 584 K 
C) 819 K 
D) 683 K 
E) 410 K

Question 2

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

Accepted Answer

A) The answer cannot be determined without volume information. 
B) The pressure of the gas becomes double the original pressure. 
C) The pressure of the gas becomes triple the original pressure. 
D) The pressure of the gas becomes one half the original pressure. 
E) The pressure of the gas becomes four times the original pressure.

Question 3

An ideal gas is at a pressure 1.00 × 105 N/m2 and a volume 2.00 m3. If the gas is compressed to a volume 1.00 m3 while the temperature remains constant, what will be the new pressure in the gas?

Accepted Answer

A) 0.500 × 105 N/m2  
B) 4.00 × 105 N/m2  
C) 1.00 × 105 N/m2  
D) 2.00 × 105 N/m2  
E) The answer depends on the mass of the gas particles.

Question 4

A sample of helium (He) occupies 44.8 L at STP. What is the mass of the sample?

Accepted Answer

A) 2 g 
B) 4 g 
C) 6 g 
D) 8 g 
E) 10 g

Question 5

A student finds a blank liquid bulb thermometer and calibrates the scale by placing it in ice water and placing a reference mark at the level of the fluid. The student places the thermometer in boiling water and finds that the fluid level is 12.0 cm above the reference mark. What is the temperature when the fluid level is 2.4 cm above the reference mark?

Accepted Answer

A) 2.4°C 
B) 24°C 
C) 25°C 
D) 28°C 
E) 20°C

Question 6

A weather balloon contains 12.0 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa. It rises to a location where the temperature is -30°C and the pressure is 20 kPa. If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon?

Accepted Answer

A) 14.0 m3  
B) 2.38 m3  
C) 49.9 m3  
D) 82.6 m3  
E) 4.16 m3

Question 7

The interior of a refrigerator has a volume of 0.600 m3. The temperature inside the refrigerator in 282 K, and the pressure is 101 kPa. If the molecular weight of air is 29 g/mol, what is the mass of air inside the refrigerator?

Accepted Answer

A) 498 g 
B) 560 g 
C) 135 g 
D) 267 g 
E) 750 g

Question 8

An ideal gas in a container of volume 100 cm3 at 20°C has a pressure of 100 N/m2. Determine the number of gas molecules in the container.

Accepted Answer

A) 2.4 × 106  
B) 4.2 × 106  
C) 6.0 × 1023  
D) 2.5 × 1018  
E) 5.2 × 1018

Question 9

A rod has a length 2.0000 m at 20.0°C. The length of the rod increases to 2.0005 m when the temperature increases to 40.0°C. What is the coefficient of thermal expansion of the material from which the rod is made?

Accepted Answer

A) 2.00 × 10-5/K 
B) 2.50 × 10-5/K 
C) 1.25 × 10-5/K 
D) 5.00 × 10-3/K 
E) 5.00 × 10-5/K

Question 10

At constant volume, the absolute pressure of a gas is inversely proportional to the absolute temperature.

Accepted Answer

A) True 
 B)False

Question 11

FIGURE 17-1 
-Consider a flat steel plate with a hole through its center as shown in Fig. 17-1. When the plate's temperature is increased, the hole will

Accepted Answer

A) expand only if it takes up more than half the plate's surface area. 
B) contract if it takes up less than half the plate's surface area. 
C) always contract. 
D) always expand. 
E) remain the same size.

Question 12

The coefficient of linear expansion of steel is 12 × 10-6K-1. What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K?

Accepted Answer

A) 1.2 cm 
B) 1.4 cm 
C) 1.6 cm 
D) 1.8 cm 
E) 2.0 cm

Question 13

Water at room temperature of 20.0°C is poured into an aluminum cylinder which has graduation markings etched on the inside. The reading in the graduations is 300.0 cc. The cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°C. What is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? The volume coefficient of expansion of water is 2.07 × 10-4K-1, and the linear coefficient of expansion of aluminum is 23.0 × 10-6K-1.

Accepted Answer

A) 305.0 cc 
B) 303.5 cc 
C) 304.0 cc 
D) 304.5 cc 
E) 303.3 cc

Question 14

The coefficient of volume expansion of olive oil is 0.68 × 10-3K-1. A 1-liter glass beaker is filled to the brim with olive oil at room temperature. The beaker is placed on a range and the temperature of the oil and beaker increases by 25 C°. As a result, 0.0167 liters of olive oil spill over the top of the beaker. What is the coefficient of linear expansion of glass?

Accepted Answer

A) 1 × 10-6K-1 
B) 4 × 10-6K-1 
C) 1 × 10-5K-1 
D) 2 × 10-5K-1 
E) 3 ×10-5K-1

Question 15

Nitrogen boils at -196°C. What is the corresponding temperature in the Fahrenheit scale?

Accepted Answer

A) -315°F 
B) -196°F 
C) -346°F 
D) -290°F 
E) -321°F

Question 16

A thermometer is made such that the freezing point of water is defined to be 60.0°H and the boiling point of water at sea level is defined to be 520°H. What is the Celsius temperature at 240°H?

Accepted Answer

A) -13.8°C 
B) 34.6°C 
C) 31.0°C 
D) -7.8°C 
E) 39.1°C

Question 17

Describe the anomalous thermal expansion property of water and its significance.

Accepted Answer

The answer of Describe the anomalous thermal expansion property of...

Question 18

Explain the operation of a constant-volume gas thermometer.

Accepted Answer

The answer of Explain the operation of a constant-volume gas...

Question 19

400 cm3 of mercury at 0°C will expand to what volume at 50°C? Mercury has a volume expansion coefficient of 180 × 10-6/C°.

Accepted Answer

A) 450 cm3   
B) 422.8 cm3  
C) 409.7 cm3  
D) 403.6 cm3  
E) 401.8 cm3

Question 20

What is wrong with the following statements? A fixed quantity of ideal gas at constant volume is warmed from a temperature of 20°C to 40°C. The pressure in the gas doubles during this process because the temperature doubles.

Accepted Answer

A) The appropriate temperature does not double during this process, so the pressure does not double either. 
B) It is impossible to keep a fixed quantity of gas at constant volume during the temperature change specified in the problem. 
C) The pressure changes to one half its initial value during this process. 
D) The conclusion regarding the pressure cannot be reached because the mass of the ideal gas particles is unknown. 
E) The pressure change will depend on whether the ideal gas particles are monatomic or polyatomic.

Exam 17: Temperature, Thermal Expansion, and the Ideal Gas Law

An ideal gas constant volume gas thermometer has pressure 2.00 atm at the triple point of water. What is the temperature when the pressure in the thermometer is 6.00 atm?

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

An ideal gas is at a pressure 1.00 × 10⁵ N/m² and a volume 2.00 m³. If the gas is compressed to a volume 1.00 m³ while the temperature remains constant, what will be the new pressure in the gas?

A sample of helium (He) occupies 44.8 L at STP. What is the mass of the sample?

The interior of a refrigerator has a volume of 0.600 m³. The temperature inside the refrigerator in 282 K, and the pressure is 101 kPa. If the molecular weight of air is 29 g/mol, what is the mass of air inside the refrigerator?

An ideal gas in a container of volume 100 cm³ at 20°C has a pressure of 100 N/m². Determine the number of gas molecules in the container.