5. A cylinder with a movable piston contains 0.41 mole of helium gas. The piston is open to the atmosphere on the top and has a mass of 30 kg and a radius of 0.1 m. The gas and cylinder are in equilibrium with the atmosphere, which has a temperature of 290 K and pressure of 1.00 x 10s Pa. The initial volume of the helium inside the cylinder is 0.0090 m when a 60-kg mass is placed on top of the piston, which compresses the gas to a smaller volume as seen in the figure. What is the final pressure of the helium gas?
(A) 2.81 x 104 Pa
(B) 1.28 x 10% Pa
(C) 3.00 x 10s Pa
(D) It is not possible to calculate the new pressure without knowing the final temperature and volume of the gas.
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which compresses the gas to a smaller volume as seen in the figure. What is the final pressure of the helium gas?
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