A gas undergoes a process from state 1, wherep1 = 60 lbf/in.2,v1 = 6.0 ft3/lb, to state 2 wherep2 = 99.6 lbf/in.2, according topv1.3 = constant. The relationshipbetween pressure, specific volume, and internal energy isu = (0.2651)pv - 95.436
where p is in lbf/in.2, v is inft3/lb, and u is in Btu/lb. The mass of gas is10 lb. Neglecting kinetic and potential energy effects, determinethe heat transfer, in Btu.