A piston$-$cylinder device is equipped with a set of stops for the piston to rest on$.$ It is initially

filled with SV of water at $250$ kPa $.$ Heat is first added at constant volume to increase the

pressure to $300$ kPa to allow the piston to start moving. Further heat addition is then

accomplished under constant pressure until the volume is double the initial volume.

a$.$ What is the final temperature $($when the volume doubles$)?$

b$.$ Calculate the boundary work involved in kJ$.$

c$.$ What is the net heat transfer into the device, in kJ$?*$you may need to interpolate values

of specific internal energy and$/$or specific enthalpy if they are not available for the

temperature or pressure calculated during the solution.

d$.$ Represent the process on a P$-$u diagram.