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Using the Kinetic Theory of Gases, explain why:Gases are very compressible.Gases diffuse quickly.

Question

Using the Kinetic Theory of Gases, explain why:Gases are very compressible.Gases diffuse quickly.

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Solution

The Kinetic Theory of Gases provides a microscopic explanation of the macroscopic behavior of gases. Here's how it explains the two phenomena:

  1. Gases are very compressible: According to the Kinetic Theory, gases are composed of a large number of tiny particles (atoms or molecules) that are in constant, random motion. These particles are widely spaced apart relative to their size, which means there is a lot of empty space between them. When pressure is applied to a gas, these particles are forced closer together, effectively reducing the volume of the gas. This is why gases are highly compressible.

  2. Gases diffuse quickly: The Kinetic Theory also states that these gas particles are in constant, random motion and move in straight lines until they collide with other particles or the walls of their container. This constant motion and the collisions cause the particles to spread out, or diffuse. Because there is so much empty space between gas particles, they can move past each other easily and quickly, leading to rapid diffusion. The lighter the gas particles, the faster they move and the quicker the diffusion.

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