Do Gases Expand Indefinitely in High School Chemistry?

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Gases do expand indefinitely under conditions of low pressure, as they will continue to spread out until evenly distributed. This phenomenon is known as diffusion, where gas molecules move from areas of higher concentration to lower concentration. The Ideal Gas Law (PV=nRT) explains the relationship between pressure, volume, and temperature in gases. When pressure approaches zero, the volume can theoretically become infinite. Understanding these principles is essential for grasping gas behavior in chemistry.
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I am in high school chemistry and we are learning about gases. Do gases expand indefinitely? Or at least until the gas is evenly distributed throughout all the other gases that are present?
 
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That's what I understand happens...
 
http://en.wikipedia.org/wiki/Ideal_gas_law

PV=nRT --> V=nRT/P

If pressure of the expanse were essentially 0 compared to the gas in question, you'd get infinity.
It's called Diffusion.

The article on the Ideal Gas Law is interesting, and should provide some insight.
 
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