Gases, Liquids and Solids - Part 1 of 2 Exam Prep | Practice Questions & Video Solutions

8. Gases, Liquids and Solids - Part 1 of 2

Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15

8. Gases, Liquids and Solids - Part 1 of 2

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8. Gases, Liquids and Solids - Part 1 of 2

15 problems

1PRACTICE PROBLEM

A gas cylinder contains helium at a pressure of 200. atm. Convert the pressure to pounds per square inch.

2PRACTICE PROBLEM

True or False. The following units are commonly used for measuring pressure: atm, bar, mmHg, and Pa.

3PRACTICE PROBLEM

Convert the 29.2 inHg (inches of mercury) barometer reading to torr and atm.

4PRACTICE PROBLEM

Based on the kinetic-molecular theory, which of the following statements best explains the increase in gas pressure as temperature is increased at a constant volume?

5PRACTICE PROBLEM

Which of the statements below is a postulate of the kinetic molecular theory of gases?

6PRACTICE PROBLEM

What volume 12.5 g of argon gas occupies at a pressure of 1.22 atm and a temperature of 352 K? If the sample were 12.5 g of helium, would the volume be different under identical conditions?

7PRACTICE PROBLEM

Explain what is wrong with the expression below and write the correct version:

Ideal Gas Law formula showing PV=nRT with example calculation.

8PRACTICE PROBLEM

Inside a prep shed where the temperature is 18.°C, an arctic weather balloon is filled with 2.15 L of helium gas. Calculate the new volume (L) of the balloon once it is taken outside where the temperature is –52°C. Assume that the pressure remains constant at 1 atm and round the answer to 3 significant digits.

9PRACTICE PROBLEM

An expandable container is filled with hydrogen gas and oxygen gas. Hydrogen gas has a partial pressure of 0.75 atm and oxygen gas has a partial pressure of 1.45 atm. Which of the diagrams (A–C) represents the change in volume of the container when the Kelvin temperature is decreased by half and the number of gas molecules is doubled at constant pressure?

Diagram A: An oval container with gas particles, representing volume change.

10PRACTICE PROBLEM

Which of the following diagrams represents the change in volume of a gas sample when the total pressure in the system increases without any temperature change?

Three diagrams showing gas particles with increasing density as pressure increases.

11PRACTICE PROBLEM

Which of the following, based on the kinetic-molecular theory of gases, best explains Avogadro's law?

12PRACTICE PROBLEM

Which statement is TRUE about ideal gas in a container?

13PRACTICE PROBLEM

Gay-Lussac's Law describes the relationship of pressure and temperature wherein the number of moles and volume are constant for an ideal gas. Which of the following expresses the description of the Gay-Lussac's Law?

14PRACTICE PROBLEM

At 250°C, a 365 mL sample of neon gas has a pressure of 2.00 atm. If the temperature of the gas sample is raised to 750 K, its pressure is changed to 675 mmHg, and the amount of gas remains unchanged, determine the final volume of the gas.

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15PRACTICE PROBLEM

Calculate the mass of ethane (C₂H₆) at STP with a volume of 11.3 L.

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