Consider a piston (your system) filled with 2 mol of monoatomic ideal gas with a

Question

Consider a piston (your system) filled with 2 mol of monoatomic ideal gas with an internal pressure P_1=2atm. Suppose you wrap your hands around the piston and allow it to expand irreversibly against an opposing pressure of 1 atm. If the system starts and ends at the same temperature, what will the piston feel like to you? It will feel warm. It will feel cool. Now suppose you wrap your hands around an identical piston, but allow it to expand reversibly via an isothermal process until it reaches the same end state as in part (a). How will this piston feel compare to the piston In part (a)? (You can ignore any time effects.). It will feel warm, but less warm than the piston in (a). It will feel warm, but more warm than the piston in (a). It will feel cool, but less cool than the piston in (a). It will feel cool, but more cool than the piston in (a). It will feel the same as the piston in part (a).

Explanation / Answer

a) It will feel warm
b) It will feel warm, but less warm than the piston in (a)

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