$1\mathrm{.}27$ Three kg of gas in a piston$$cylinder assembly undergo a process during which the relationship between pressure and specific volume is py$0\mathrm{.}55$ constant. The process begins with p$15250$kPaandV$151\mathrm{.}5$m$3$ andendswithp$25100$kPa. Determine the final specific volume, in m$3/$kg$.$ Plot the process on a graph of pressure versus specific volume.