A piston-cylinder device initially contains 1.0 kg of water at 30 o C and 2 MPa. The water is heated at constant pressure until one-quarter of the mass evaporated. Determine: a) the initial volume of the system. b) the final volume and temperature after heating. c) the amount of heat added during the process (in kJ). d) Show the process on T-v diagram Need b,c,d parts

I need solve Q3 only

5. "Wet steam" at 200 kPa has 40% of its mass as liquid. The water is contained in a spring-loaded piston-cylinder, with an initial volume of 3 m'. The steam is now heated until its volume is 4.535 m and its pressure is 500 kPa. Determine: a) The final temperature b) c) The work done by the steam The total heat transferred Spring d) Show the process on a P-v diagram Steam

1 - Consider 2 kg of water in a cylinder blocked by a piston at 20 C, 200 kPa. Water is heated and piston starts to rise. When the piston reaches the blocks, the volume of water has doubled. Heating continues until the pressure also doubles. Calculate the work done by water and the amount of heattransfer. Consider the case that the piston is restricted by the linear spring. Initially the spring is at rest. Water is heated until the piston reaches the blocks. Just before it hits the blocks the pressure is twice the initial pressure. Calculate the work done by water and the amount of heat transfer by the time the piston reaches the blocks. 7 D H₂0