Compression of gas ...
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Gas confined within a container is compressed quickly. Which of the following remains constant?
Size of gas molecules
Separation distance of gas molecules
Collision frequency of gas molecules
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on 19 July 2005 at 1:39pm
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Size of molecule does not change during compression of gas
Because of the compression ...
Gas density increases because gas mass remains constant while its volume decreases.
Gas temperature increases because the compression is non-gradual (fast). Equilibrium is not achieved at every stage of the compression - hence heat is not dissipated.
Separation distance of gas molecules decreases because compression reduces space while number of molecules is constant.
Collision frequency increases because of 2 factors: separation distance is smaller; and molecules move faster at higher temperatures.
The only constant is the size of the gas molecules.
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