Gases: Homework Help 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. A 4 L sample of gas is heated from 20 K to 200 K. What will its final volume be?

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

Question 3 3. Which Celsius temperature is equal to 310 K?

Question 4 4. What does b represent in the van der Waals equation?

Question 5 5. What advantage does the van der Waals equation give us over the ideal gas law?

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Question 6 6. Why would a scientist have difficulty observing the behavior of an ideal gas?

Question 7 7. Assuming the volume is held constant, what happens to the pressure of a gas when the absolute temperature doubles?

Question 8 8. Why can't all of the gas particles in a container have very high or very low speeds?

Question 9 9. In the ideal gas equation, what does R represent?

Question 10 10. Which units of pressure are needed if you are going to use 0.0821 as your ideal gas constant?

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Question 11 11. Which of these conditions is NOT considered 'non-ideal'?

Question 12 12. A container has a volume of 53.9 L. Assuming it is at STP, how many moles of gas particles does it contain?

Question 13 13. What volume is occupied by 15.0 moles of carbon dioxide gas at standard temperature and pressure?

Question 14 14. According to the kinetic molecular theory, temperature is directly proportional to _____.

Question 15 15. If someone is measuring pressure, they might use any of the following units EXCEPT _____.

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Question 16 16. How do you calculate a and b in the van der Waals equation?

Question 17 17. What does the Maxwell-Boltzmann curve tell us?

Question 18 18. The ideal gas constant, R, can be found using which of the following equations?

Question 19 19. To use Charles' Law, which of the following needs to remain constant?

Question 20 20. A sealed vessel contains 0.5 moles of oxygen, 0.1 moles of carbon dioxide, and 0.4 moles of nitrogen gas. The total pressure of the gas mixture is 5 atmospheres. What is the partial pressure of the carbon dioxide?

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Question 21 21. Why do a and b get multiplied by n in the van der Waals equation?

Question 22 22. An expandable container is holding 0.75 moles of argon with a volume of 5.0 L. Assuming the temperature and pressure are held constant, how many moles of argon would be needed to increase the volume to 7.0 L?

Question 23 23. The _____ states that gas particles are constantly moving in rapid, random movement.

Question 24 24. 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 25 25. To use Boyle's Law, which of the following needs to remain constant?

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Question 26 26. How does a higher temperature affect the probability distribution curve of gas particles?

Question 27 27. Which of the following variables is NOT included in the ideal gas equation?

Question 28 28. If you add a gas to a container with a fixed volume, what happens to the amount of pressure in that container?

Question 29 29. Why does the volume of gas particles become important when the volume of the container is decreased?

Question 30 30. Why does the probability curve become narrower when gas particles are more massive?

Gases: Homework Help Chapter 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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