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

Question 2 2. What is the name of the sum of atomic masses in a chemical formula?

Question 3 3. If you want to find the volume of a gas using the ideal gas law, which values do you need to know?

Question 4 4. Which of the following variables is NOT included in the ideal gas equation?

Question 5 5. 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?

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Question 6 6. Which units of pressure are needed if you are going to use 0.0821 as your ideal gas constant?

Question 7 7. 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?

Question 8 8. Which is considered ideal conditions?

Question 9 9. A container holds a mixture of two different gases. The oxygen in a container exerts 80 mmHg of pressure on the inside of the container. The total pressure inside the container is 120 mmHg. What is the pressure of the other gas in the container?

Question 10 10. Gas particles have random _____.

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Question 11 11. At constant temperature, what happens to the pressure when the volume is doubled?

Question 12 12. Why does the probability curve become narrower when gas particles are more massive?

Question 13 13. Which of the following is TRUE about most gases?

Question 14 14. Why does the volume of gas particles become important when the volume of the container is decreased?

Question 15 15. Which of the following is the best definition for Torr?

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Question 16 16. A container has a volume of 53.9 L. Assuming it is at STP, how many moles of gas particles does it contain?

Question 17 17. What volume is occupied by 15.0 moles of carbon dioxide gas at standard temperature and pressure?

Question 18 18. A balloon has an initial volume of 150 mL at 25 degrees Celsius. If the temperature is increased to 75 degrees Celsius, what is the final volume?

Question 19 19. What does it mean when a collision is elastic?

Question 20 20. In the ideal gas equation, what does R represent?

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Question 21 21. Why would a scientist have difficulty observing the behavior of an ideal gas?

Question 22 22. Which of these conditions is NOT considered 'non-ideal'?

Question 23 23. Assuming pressure and temperature are held constant, then what happens to the volume of a non-rigid container when the number of molecules in the container is doubled?

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

Question 25 25. At constant pressure, what happens to the volume of a gas when the absolute temperature doubles?

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Question 26 26. What is the equation of the ideal gas law?

Question 27 27. 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?

Question 28 28. What is mass?

Question 29 29. To use Gay-Lussac's Law, which of the following needs to remain constant?

Question 30 30. How does a higher temperature affect the probability distribution curve of gas particles?

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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