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Gases in Chemistry Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Why would a scientist have difficulty observing the behavior of an ideal gas?

Question 2 2. Standard temperature and standard pressure refer to:

Question 3 3. Why can't all of the gas particles in a container have very high or very low speeds?

Question 4 4. A sample of hydrogen has a volume of 25 L under a pressure of 5 atm. What will the pressure of this gas be if the volume were decreased to 5 L?

Question 5 5. Hugo measures the pressure in his car's tire and finds that it is 32 Psi. What is the pressure if he converts this measurement from Psi to Torr?

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Question 6 6. Absolute zero is:

Question 7 7. According to the kinetic molecular theory, temperature is directly proportional to _____.

Question 8 8. Oxygen is collected in a test tube over 30 degree Celsius water. The vapor pressure of the water at that temperature is about 32 mmHg. If the atmospheric pressure is 640 mmHg, then what percentage of the gas in the test tube is oxygen?

Question 9 9. Which of the following is TRUE about ideal gas particles?

Question 10 10. A 4 L sample of gas is heated from 20 K to 200 K. Its initial pressure was 60 torr. What is its final pressure?

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Question 11 11. Avogadro's law shows the relationship between _____.

Question 12 12. Assuming the volume is held constant, what happens to the pressure of a gas when the absolute temperature doubles?

Question 13 13. How does a higher temperature affect the probability distribution curve of gas particles?

Question 14 14. Which units of pressure are needed if you are going to use 0.0821 as your ideal gas constant?

Question 15 15. To use Gay-Lussac's Law, which of the following needs to remain constant?

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Question 16 16. How would you rearrange the ideal gas equation to calculate the pressure of a gas?

Question 17 17. The _____ states that gas particles are constantly moving in rapid, random movement.

Question 18 18. A bag of chips has a volume of 2.0 L at 760 torr of pressure. What is its volume in an airplane flying at a high altitude with a pressure of 550 torr?

Question 19 19. Dana has placed a few drops of food coloring in a mixture of water and vinegar to dye hard-boiled eggs with her daughter in preparation for Easter. The food coloring changing the color of the water is an example of _____.

Question 20 20. If carbon dioxide molecules effuse at an average rate of 5 mol/s, at what rate would diatomic hydrogen molecules effuse in the exact same conditions?

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Question 21 21. Which of the following variables is NOT included in the ideal gas equation?

Question 22 22. Which Celsius temperature is equal to 310 K?

Question 23 23. If you add a gas to a container with a fixed volume, what happens to the amount of pressure in that container?

Question 24 24. 1000 mL of a gas is cooled from 500 K to 250 K. What is its final volume?

Question 25 25. A sample of an ideal gas is heated from 200 degrees Celsius to 400 degrees Celsius. If the initial pressure is 45 torr, then what is the final pressure?

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Question 26 26. Why do a and b get multiplied by n?

Question 27 27. What advantage does the van der Waals equation give us over the ideal gas law?

Question 28 28. At constant pressure, what happens to the volume of a gas when the absolute temperature doubles?

Question 29 29. Temperature is a measure of:

Question 30 30. In the van der Waals equation, what does a represent?

Gases in Chemistry Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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