a sample of gas is contained in a cylinder enclosed by a piston. the pressure of the gas can be raised by slowly moving the piston to compress the gas into a smaller volume without raising the temperature of the gas.
(a) explain in molecular terms why the pressure of the compressed gas is greater after compression.
(b) explain in molecular terms why the pressure of the gas rises as it is heated.

Question

a sample of gas is contained in a cylinder enclosed by a piston. the pressure of the gas can be raised by slowly moving the piston to compress the gas into a smaller volume without raising the temperature of the gas.
(a) explain in molecular terms why the pressure of the compressed gas is greater after compression.
(b) explain in molecular terms why the pressure of the gas rises as it is heated.

potatoes.ramu · Answer

When the gas is compressed, the molecules of the gas move closer together, thereby increasing the pressure.

When the gas is heated, the molecules are excited and start moving faster, so the pressure increases.

potatoes.ramu · Answer

I hope I helped. :)

anonymous · Answer

Welcome to OpenStudy!
(a) This is how the piston looks like when it isn't moved. Notice how the molecules have a great space to move in?
Pressure is the strength and number of molecular collisions in a particular surface area.
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When the piston is moved.The distance between the molecules has decreased greatly.
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