A closed system consisting of 2lb of a gas undergoes a process during which the relation between pressure and volume is pV^n = constant. the process begins with p1=20 lbf/in^2 V1=10ft^3 and ends with p2=100 lbf/in^2 V2=2.9ft^3 Determine value of n and specfic volume states 1 and 2 each in ft^3/lb and sketch the process on pressure volume coordinates.