A vertical piston-cylinder assembly containing 0.3 Kg of steam, initially a vapor, is placed on a hot plate. Due to the weight of the piston and the surrounding atmospheric pressure, the pressure of the steam is 20 bar. Heating occurs slowly, and the steam expands at constant pressure until the final temperature is 200 °C. Show the initial and final states on T-v and p-v diagrams, and determine. (a) the volume occupied by the steam at each end state, in m3. (b) the work for the process.

As shown in the figure below, a cylinder fitted with a piston is filled with 600 lb of saturated liquid ammonia at 45°F. The piston weighs 1 ton and has a diameter of 2.5 ft. * Your answer is incorrect. V= What is the volume occupied by the ammonia, in ft3? Ignoring friction, determine the force required, in lbf, by mechanical attachments, such as stops, to hold the piston in place. What is the volume occupied by the ammonia, in ft³? i 15376500 Patm = 1 atm Piston ft3 Ammonia Saturated liquid - Weight = 1 ton D=2.5 ft

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A piston-cylinder device contains an ideal gas of nitrogen. At the initial state, the volume is V1= 1.00 m3, the pressure is p1= 400.00 kPa, the temperature is T1= 300.00 K. An electric heater within the device is turned on for a time of Δt = 5.00 min. The current is I = 3.00 A, and the source voltage is V = 120.00 V. During the heating process, the gas expands, and a heat loss of Qout = 2.80 kJ occurs.  The gas constant is R = 0.297 kPa·m3/(kg·K), and the room temperature specific heat at constant pressure is cp =1.039 kJ/(kg·K).  Calculate the electrical work done on the gas, Wele__________ (kJ)