Steam enters a diffuser operating at steady state with a pressure of 14.7 psi, a temperature of 300F, and a velocity of 500ft/s. Steam exits the diffuser as a saturated vapor with negligible kinetic energy. Heat transfer occurs from the steam to its surroundings at a rate of 19.59 BTU per lb of steam flowing. Neglecting potential energy effects, determine the exit pressure, in lbf/in^2.