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A piston-cylinder system is filled with air. Initially, the air is at 471 kPa and 25 °C. Then air is expanded to 1.6 times its original Assume the expansion process is isentropic and air is an ideal gas. 1) Find the change in entropy using constant specific heats at 300 K. / 0 2) Find the change in internal energy using constant specific heats at 300 K 3) Find the change in entropy considering specific heats are temperature-dependento 4) Find the change in internal energy considering specific heats are temperature-dependent. X kJ/kgK kJ/kg 0 kJkgk Attempts Remaining: 3 New Problem (resets attempts) Resets Remaining: 5
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