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# A cylinder with a cross-sectional area of 0.05 m2 is sealed with a moveable piston.

A cylinder with a cross-sectional area of 0.05 m2 is sealed with a moveable piston. Initially, the cylinder has a volume of 20 liters and is filled with an ideal gas at a temperature of 22 C and a pressure of 1 atm.

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(a) Find the number of molecules in the gas.
N = ___molecules

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(b) The piston is compressed to a volume of 4 liters and the pressure rises to 4 atm. Find the new temperature of the gas.
Tf =___K

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