1. The Atomic Model of an Ideal Gas
  1. The temperature of a gas depends on _____.
  1. the number of gas particles present
  2. the speed of gas particles present
  3. both the number and speed of gas particles present
  1. The thermal energy contained in a gas depends on _____.
  1. the number of gas particles present
  2. the speed of gas particles present
  3. both the number and speed of gas particles present
  1. What could happen to a substance when thermal energy is added?
  1. The temperature could rise.
  2. The state of matter could change.
  3. Temperature could rise or the state of matter could change, either or both could happen.
  1. A small amount of thermal energy is added to a cube of ice at -2o C, what would happen to the cube of ice?
  1. A small part of the cube will melt.
  2. The entire cube will melt.
  3. The temperature of the cube will rise.
  4. There will be no change to the cube of ice.
  1. Which of the following is true for a sample of water at 0o C that is changing from liquid water to solid ice?
  1. The sample is gaining thermal energy.
  2. The sample is losing thermal energy.
  3. There is no change in the sample’s thermal energy.
  1. Two gases have the same number of molecule per cubic meter (N/V) and the same average speed. The molecules of gas 2 are twice as massive as the molecules of gas 1.

a)Which gas has the largest temperature?

gas 1gas 2same

Explain:

b)Which gas has the largest pressure?

gas 1gas 2same

Explain:

GAS / Molar Mass
Argon / 0.040 kg/mol
Helium / 0.004 kg/mol
Hydrogen / 0.004 kg/mol
Neon / 0.020 kg/mol
Nitrogen / 0.028 kg/mol
Oxygen / 0.032 kg/mol
  1. Consider two systems; 5 mol of helium and 5 mol of neon (@ STP), which of the following statements are true?
  1. The systems contain the same mass of gas.
  2. The systems contain the same number of atoms.
  3. The systems of gas occupy the same volume.
  1. I only
  2. II only
  3. I and III
  4. II and III
  5. I, II, and III
  1. Consider two systems; 5 mol of helium and 1 mol of neon (@ STP), which of the following statements are true?
  1. The systems contain the same mass of gas.
  2. The systems contain the same number of atoms.
  3. The systems of gas occupy the same volume.
  1. I only
  2. II only
  3. I and III
  4. II and III
  5. I, II, and III
  1. A cylinder of gas contains 1 mol of helium at 20o C. A second cylinder contains 1 mol of neon gas at 20o C. The helium atoms have a higher average speed but the gas pressure in the two containers is the same. Explain how this is possible.
  1. (I) A system contains 100 g of oxygen.

a)How many moles does the system contain?

b)How many particles does the system contain?

  1. (I) A box is 200 cm wide, 40 cm deep and 3 cm high.

a)What is the volume of the box in cubic centimeters (cm3)?

b)What is the volume of the box in cubic meters (m3)?

  1. B
/
  1. c
/
  1. c
/
  1. c
/
  1. b

  1. gas 2 more KE perparticle; gas 2 pressure depends on temperature
/
  1. d
/
  1. a
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  1. neon has a higher molar mass
/
  1. 3.1 mol; 1.9x1024 molecules

  1. 24000 cm3 ; 0.024 m3

  1. Gas Laws
  1. The number of atoms of a gas in a container is increased by a factor of 2 while the temperature is held constant. What will happen to the pressure of exerted by the gas?
  1. A gas is held at a constant temperature while it is compressed changing the volume of the gas by a factor of 2. What happens to the pressure exerted by the gas?
  1. (I) If both temperature and volume of an ideal gas are halved, how does the pressure change?
  1. (I) One mole of xenon gas at 19o C occupies a container with a volume of 0.258 m3. What is the pressure exerted by the xenon atoms on the walls of the container?
  1. (II) A cylinder with a moveable piston contains a gas at a temperature of 15.9o C, a volume of 1.73 m3, and an absolute pressure of 31500 Pa. What will be the final temperature of the gas if it is compressed to 0.37 m3 and the absolute pressure increases to 1.82 x 105 Pa?
  1. (II) An air bubble originating from a diver has a radius of 5 mm at some depth h. When the bubble reaches the surface of the water, it has a radius of 6 mm.
  1. Assuming the temperature of the air bubble remains constant; determine the depth of the diver.
  2. Determine the absolute pressure at this depth.
  1. (II) A sealed glass bottle at 27o C contains air at a pressure of 1.01 x 105 Pa and has a volume of 28.5 cm3. The bottle is tossed into an open fire. When the air temperature inside the bottle reaches 231o C, what is the air pressure inside the bottle?
  1. (III) Gas confined in a tank at pressure 1.09 x 108 Pa and a temperature of 10.9o C. Half of the gas is withdrawn and the temperature is raised to 67o C. What is the new pressure in the tank?
  1. (III) Determine the density of oxygen gas at 1.9 atm and 10o C.
  1. (I)A car starts out when the air temperature is 288 K. The air pressure in the tires is 500 kPa. After driving a while, the temperature of the air in the tires increases to 298 K. What is the pressure in the tires at that point, assuming the volume remains constant?

A) 483 kPa

B) 507 kPa

C) 517 kPa

D) 532 kPa

  1. (I) An automobile tire has a volume of 0.0185 m3. If the pressure in the tire is 500 kPa and the temperature is 298 K, how many molecules are there inside the tire?

A) 2.25 × 1023

B) 2.25 × 1024

C) 3.25 × 1023

D) 3.25 × 1024

  1. (I) Your lungs hold 4.2 L of air at a pressure of 101.3 kPa. If you are holding your breath and dive into a pool to a depth of 5.0 m below the surface of the water, what is the volume of the air in your lungs assuming that the temperature remains the same?

A) 2.8 L

B) 2.9 L

C) 3.2 L

D) 3.3 L

  1. (I) What is the temperature of 3.0 moles of gas at a pressure of 250 kPa held in a volume of 15 L?

A) 150 K

B) 200 K

C) 250 K

D) 300 K

  1. Increases by a factor of 2.
/
  1. Increases by a factor of 2.
/
  1. Remains constant
/
  1. 9410 Pa

  1. 84.6o C
/
  1. 7.50 m
175,000 Pa /
  1. 1.70x105 Pa
/
  1. 6.53x107 Pa

  1. 2.62 kg/m3
/
  1. C
/
  1. B
/
  1. A

  1. A

  1. Heat Transfer
  1. A glass window 0.50 cm thick measures 85 cm by 38 cm. How much thermal energy flows through the window per minute if the inside and outside temperature differs by 18 Co?
  2. Find the thermal energy that flows through a lead brick each second if the lead brick is 15 cm long, has a cross sectional area of12 cm2, and has a temperature difference of 8.5 Co between the ends of the brick.

  1. a) 323 K
b) 423 K
c) 873 K / 2. a) -223o C
b) -123o C
c) 0o C / 3. -128.6o F / 4. 1.6 m / 5. expand 4.8cm
contract 12 cm
6. 1.01 cm / 7. a) heated
b) 430o C / 8. a) yes
b) 0.93 L / 9. / 10. 2.3 J