Virtual Lab - Gas Laws-1 PDF

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Professor Fenstermaker...

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Module 10: Virtual Lab – Exploring the Relationship Between P, V and T for Ideal Gases In this lab, you will explore the relationship between Pressure, Volume, and Temperature of an Ideal Gas. Fully answer the questions below and submit them to your instructor. Use the PhET simulation (https://phet.colorado.edu/sims/html/gas-properties/latest/gasproperties_en.html) to answer these questions. Click the “Ideal” icon at the link. a. Add gas to the chamber, by moving the pump lever up and down. b. Hold the temperature constant and decrease the volume. What happens to the pressure? Explain why the pressure changed based on the number of collisions between particles and between particles and the wall of the chamber. -

The pressure increased. The pressure changed because the room for the gas to fill decreased making it more likely for the gas particles to collide with each other and the walls of the chamber thus increasing pressure. c. Hold the volume constant and increase the temperature. What happens to the pressure? Explain why the pressure changed in terms of particle collisions.

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When the temperature increases the pressure also increases. The increase in temperature excites the particles making them move faster thus increasing the rate at which they collide with each other and the walls of the chamber. d. Hold the volume constant and increase the number of particles. What happens to the pressure? Explain why in terms of particle collisions.

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When more particles were added the pressure increases. This is because more space of the chamber is occupied by particles making it more likely for the particles to collide. e. Hold the pressure constant, while allowing the volume to change, and increase the number of particles. What happens to the volume? Explain why in terms of particle collisions. How does this compare to what happens when you blow up a balloon?

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The volume increases when more particles are added. This happens because the particles collide with the wall pushing it outward thus making more room for the particles. When you blow up a balloon you push particles into the balloon with every breath and because rubber is stretchy it is easily pushed out by the particles colliding with it, expanding the size of the balloon....