A piston-cylinder device contains 25 g of saturated water vapor that is tamed at

Question

A piston-cylinder device contains 25 g of saturated water vapor that is tamed at a constant pressure of 300 kPa. A resistance heater within the cylinder is turned on and passes a current of 0.2 A for 5 min from a ' 20-v source. At the same time, a heat loss of 3.7 kJ occurs. (a) Show the.: for a closed system the boundary work W_ b and the change in internal energy AU in the first-law relation can be combined into one term, Delta H, for a constant-pressure process, (b) Determine the final temperature of the steam.

Explanation / Answer

you must provide the initial temperature to find the final temperature. as only change in temperature could be calculated from the given data

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