A gas undergoes a process from state 1, where
p1 = 60 lbf/in.2,
v1 = 6.0 ft3/lb, to state 2 where
p2 = 99.6 lbf/in.2, according to
pv1.3 = constant. The relationship
between pressure, specific volume, and internal energy is
u = (0.2651)pv - 95.436
where p is in lbf/in.2, v is in
ft3/lb, and u is in Btu/lb. The mass of gas is
10 lb. Neglecting kinetic and potential energy effects, determine
the heat transfer, in Btu.