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Exploring Gas Laws: Volume, Pressure, and Moles Calculations

This document delves into various practical gas law problems and calculations, illustrating the relationships between pressure, volume, and the number of moles of gas. Questions encompass scenarios such as changing pressure and temperature, and the impact of volume adjustments. Each problem is posed with multiple choice answers, providing an engaging way to apply concepts from the Ideal Gas Law and other gas behaviors. Ideal for students and enthusiasts in chemistry looking to strengthen their understanding of gas laws through examples.

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Exploring Gas Laws: Volume, Pressure, and Moles Calculations

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Presentation Transcript

  1. Gas Unit Review

  2. Death Cab for Cutie: Ben Gibbard :: Doors : • Robert Plant • Jimi Hendrix • Janis Joplin • Jim Morrison

  3. The volume of a gas at 99.0 kPa is 300.0 mL. If the pressure is increased to 188 kPa, what is the new volume in milliliters? • 570. mL • 158 mL • 62.0 mL • 89.0 mL

  4. The pressure in a car’s tire is 35 psi at 25 °C. What would the pressure be in the winter when the temperature drops to -2 °C? • -2.8 psi • 1.3 psi • 32 psi • 380 psi

  5. A reaction between 14.9 grams of solid BiCl5 and an excess of solid iodine. How many milliliters of gas would be produced if the pressure is 49.9 psi and the temperature is 24.5 °C?___BiCl5(s) + ___I2(s)  ___Cl2(g) + ___BiI5(s) • 47.2 mL • 278 mL • 694 mL • 2.15 x 103 mL

  6. A sample of gas is at a pressure of 12.9 psi. If the volume is tripled, what is the new pressure of the gas? • 4.30 psi • 9.90 psi • 12.9 • 38.7 psi

  7. A beach ball that contains 2.3 Liters of gas at room temperature, 23 °C, is heated to 288 °C. What is the resulting volume? • 29 L • 13 L • 6.8 L • 4.4 L

  8. Participant Scores

  9. A sample of nitrogen gas has a volume of 20.0 L at 158 °F and 1.70 atm. What mass of nitrogen gas is present? • 33.8 grams • 16.9 grams • 2.62 grams • 1.21 grams

  10. A container holds 1.75 moles of carbon dioxide gas at a pressure of 17.7 psi. If the pressure drops to 11.1 psi, how many moles of gas would be evacuated? • 0.56 moles • 0.65 moles • 1.20 moles • 6.60 moles

  11. How many moles must be added to a windsock if the initial volume of 9.33 moles is 121 Liters and the new volume is 178 Liters? • 13.7 moles • 9.33 moles • 4.40 moles • 1.66 moles

  12. I inflate a balloon to 4.0 L at Prairie Ridge and the temperature is 22.0°C and the pressure is 768 mm Hg. I take the balloon scuba diving where the pressure is 7.0 atm and the temperature is 12.3 °C. What is the volume of the balloon? • 29. L • 4.2 L • 0.56 L • 0.32 L

  13. Participant Scores

  14. What percentage of your current points would you like to wager on the last question? • 0% • 25% • 50% • 75% • 100%

  15. Nitrogen dioxide gas is collected over water and the wet gas has a volume of 15.0 mL at 40.°C. The pressure of the room is 730. mm Hg . How many moles of nitrogen dioxide gas are present? • 5.18 x 10-4 moles • 5.61 x 10-4 moles • 0.426 moles • 0.561 moles

  16. Participant Scores

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