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A cylinder which is in a horizontal position contains an unknown noble gas at 54700 Pa54700...

A cylinder which is in a horizontal position contains an unknown noble gas at 54700 Pa54700 Pa and is sealed with a massless piston. The piston is slowly, isobarically moved inward 0.189 m0.189 m, while 16800 J16800 J of heat is removed from the gas. If the piston has a radius of 0.305 m0.305 m, calculate the change in internal energy Δ?ΔU of the system.

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Answer #1

Negative value of internal energy indicates that the internal energy of the system decreases

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