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MEGA Chemistry: Gas Laws 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!

Page 1

Question 1 1. To use Gay-Lussac's Law, which of the following needs to remain constant?

Question 2 2. 1000 mL of a gas at 15 atm is compressed to 500 mL. What is its new pressure?

Question 3 3. According to the kinetic molecular theory, temperature is directly proportional to _____.

Question 4 4. 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?

Question 5 5. What does it mean when a collision is elastic?

Page 2

Question 6 6. 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 7 7. Why would a scientist have difficulty observing the behavior of an ideal gas?

Question 8 8. 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?

Question 9 9. If you want to find the volume of a gas using the ideal gas law, which values do you need to know?

Question 10 10. Which of the following is TRUE about most gases?

Page 3

Question 11 11. 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 12 12. To use Charles' Law, which of the following needs to remain constant?

Question 13 13. Which of the following is TRUE about ideal gas particles?

Question 14 14. Which of these is the most common form of the ideal gas equation?

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

Page 4

Question 16 16. At constant pressure, what happens to the volume of a gas when the absolute temperature doubles?

Question 17 17. If a gas with a pressure of 6 atmospheres is cooled from 500 K to 250 K, then what is its final pressure?

Question 18 18. At constant temperature, what happens to the pressure when the volume is doubled?

Question 19 19. 1000 mL of a gas is cooled from 500 K to 250 K. What is its final volume?

Question 20 20. Assuming the volume is held constant, what happens to the pressure of a gas when the absolute temperature doubles?

Page 5

Question 21 21. In the ideal gas equation, what does R represent?

Question 22 22. If you know the temperature, volume, and pressure of a gas, how would you rearrange the ideal gas equation to find the number of moles?

Question 23 23. 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 24 24. 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 25 25. A 4 L sample of gas is heated from 20 K to 200 K. What will its final volume be?

Page 6

Question 26 26. How would you rearrange the ideal gas equation to calculate the pressure of a gas?

Question 27 27. The ideal gas constant, R, can be found using which of the following equations?

Question 28 28. Which units of pressure are needed if you are going to use 0.0821 as your ideal gas constant?

Question 29 29. If a 22.4 L container is holding 1.00 mole of a gas at 273 kelvins, then what is its pressure?

Question 30 30. Which of the following variables is NOT included in the ideal gas equation?

MEGA Chemistry: Gas Laws 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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