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Gases & Gas Laws Study Guide 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. In the van der Waals equation, what does a represent?

Question 2 2. Avogadro's law shows the relationship between _____.

Question 3 3. 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 4 4. At constant temperature, what happens to the pressure when the volume is doubled?

Question 5 5. Which of the following statements best represents Graham's Law?

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Question 6 6. What is the name of the sum of atomic masses (for molecular compounds) in a chemical formula?

Question 7 7. What is the equation of the ideal gas law?

Question 8 8. If a gas with a pressure of 6 atmospheres is cooled from 500 K to 250 K, then what is its final pressure?

Question 9 9. To use Boyle's Law, which of the following needs to remain constant?

Question 10 10. Why do a and b get multiplied by n in the van der Waals equation?

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Question 11 11. 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?

Question 12 12. 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 13 13. Which is considered ideal conditions?

Question 14 14. 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 15 15. If a 22.4 L container is holding 1.00 mole of a gas at 273 kelvins, then what is its pressure?

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Question 16 16. 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 17 17. How does a higher temperature affect the probability distribution curve of gas particles?

Question 18 18. A gas is collected by water displacement at 25 degrees Celsius. The vapor pressure of water at that temperature is 24 mmHg. If the atmospheric pressure is 800 mmHg, then what is the pressure of the dry gas you collected?

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

Question 20 20. If you want to find the volume of a gas using the ideal gas law, which values do you need to know?

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

Question 22 22. What is the equation that defines density?

Question 23 23. What is mass?

Question 24 24. Standard temperature and standard pressure refer to:

Question 25 25. 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?

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Question 26 26. How do you calculate a and b in the van der Waals equation?

Question 27 27. A 4 L sample of gas is heated from 20 K to 200 K. What will its final volume be?

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

Question 30 30. 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?

Gases & Gas Laws Study Guide 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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