Question 1

A scuba diver descends to a depth where the pressure is 3 atm. If the diver's lungs initially contain 6.0 L of air at the surface (1 atm), what will be the volume of air in the diver's lungs at depth, assuming temperature remains constant?
Correct answer: 2.0 L

Accepted Answer

2.0 L

Question 2

Which of the following best explains why a balloon expands when heated, assuming pressure is constant?
Correct answer: The gas molecules move faster and occupy more volume.

Accepted Answer

The gas molecules move faster and occupy more volume.

Question 3

A sample of gas occupies 4.0 L at 300 K. If the temperature increases to 450 K at constant pressure, what is the new volume?
Correct answer: 6.0 L

Accepted Answer

6.0 L

Question 4

Which of the following is NOT a correct unit conversion for standard atmospheric pressure?
Correct answer: 1 atm = 1000 torr

Accepted Answer

1 atm = 1000 torr

Question 5

A 2.0 mol sample of gas is at 1.0 atm and 273 K. What is its volume according to the ideal gas law?
Correct answer: 44.8 L

Accepted Answer

44.8 L

Question 6

A sealed syringe contains 10 mL of air at 1 atm. If the plunger is pushed in to reduce the volume to 2 mL at constant temperature, what is the new pressure inside the syringe?
Correct answer: 5 atm

Accepted Answer

5 atm

Question 7

Which law would you use to determine the final pressure of a gas if its volume and temperature both change, but the amount of gas remains constant?
Correct answer: Combined Gas Law

Accepted Answer

Combined Gas Law

Question 8

A gas sample at 2.0 atm and 300 K occupies 5.0 L. If the pressure is reduced to 1.0 atm and the temperature is increased to 600 K, what is the new volume?
Correct answer: 20.0 L

Accepted Answer

20.0 L

Question 9

Which of the following statements about atmospheric pressure is correct?
Correct answer: It is caused by the force of gas molecules striking surfaces.

Accepted Answer

It is caused by the force of gas molecules striking surfaces.

Question 10

A 1.0 L container holds 0.5 mol of an ideal gas at 300 K. What is the pressure inside the container? (R = 0.0821 L·atm/(K·mol))
Correct answer: 4.1 atm

Accepted Answer

4.1 atm

Question 11

If the number of moles of gas in a rigid container is doubled at constant temperature, what happens to the pressure?
Correct answer: It doubles.

Accepted Answer

It doubles.

Question 12

A patient is given oxygen from a tank at 2000 psi. If the tank contains 10 L of oxygen at this pressure, how many liters would the gas occupy at atmospheric pressure (1 atm = 14.7 psi), assuming temperature is constant?
Correct answer: 1360 L

Accepted Answer

1360 L

Question 13

Which scenario best illustrates Avogadro's Law?
Correct answer: Adding more gas to a balloon increases its volume at constant temperature and pressure.

Accepted Answer

Adding more gas to a balloon increases its volume at constant temperature and pressure.

Question 14

A weather balloon is filled with 5.0 mol of helium at 1.0 atm and 273 K. If the balloon rises and the pressure drops to 0.5 atm while the temperature remains constant, what happens to the volume?
Correct answer: It doubles.

Accepted Answer

It doubles.

Question 15

Which of the following is a key assumption of the ideal gas law?
Correct answer: Gas molecules do not attract or repel each other.

Accepted Answer

Gas molecules do not attract or repel each other.

Question 16

A gas sample is cooled from 400 K to 200 K at constant pressure. If its initial volume was 8.0 L, what is its final volume?
Correct answer: 4.0 L

Accepted Answer

4.0 L

Question 17

A nurse needs to administer a precise volume of anesthetic gas. If the gas is stored at 3 atm in a 2 L container, how many liters will it occupy at 1 atm when released into a breathing bag, assuming constant temperature?
Correct answer: 6 L

Accepted Answer

6 L

Question 18

Which of the following best describes the relationship between pressure and volume for a fixed amount of gas at constant temperature?
Correct answer: They are inversely proportional.

Accepted Answer

They are inversely proportional.

Question 19

A gas occupies 12 L at 2 atm and 300 K. What will be its volume at 1 atm and 600 K?
Correct answer: 48 L

Accepted Answer

48 L

Question 20

Which of the following is a correct application of the combined gas law?
Correct answer: Calculating the new volume of a gas when both pressure and temperature change.

Accepted Answer

Calculating the new volume of a gas when both pressure and temperature change.

Key Concepts of Gas Laws and Atmospheric Pressure

Study Guide - Practice Questions

Study Guide - Flashcards