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Three variables that effect volume (V) of gas are pressure (P), temperature (T), and how many moles (n) of gas are present in a system. Decreasing any of these variables correspond to gas volume reductions. These can be related by the Ideal Gas Law equation of PV = nRT. R is the Ideal Gas constant of .0821 Liters/ATM*moles*Kelvin.

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14y ago

An increase in pressure, a decrease in temperature, and a decrease in the number of moles of gas could all cause a decrease in volume of a gas.

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Q: What effect does a decrease in volume have on the number of gas molecules?
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