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1 kg water in a piston cylinder device is initially at 250 degrees C and 300kpa (state 1) a total of 700 kj of work is done on the water in order to isothermally reduce its volume to 1/20 of its initial volume (state 2) determine the magnitude and the direction of the heat transfer involved in this process closed system and ideal gas please show steps
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---a heat engine operates between two heat reservoirs with temperature of 560 and 280 k. the thermal efficiency of the
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