In a heat pump that uses R-134a as the working fluid, the R-134a enters the compressor at 30 lbf/in^.2, 20 F. In the compressor the R-134a is compressed in an adiabatic process to 150 lbf/in^.2 using 1.5 Btu/s of power. Find the mass flow rate it can provide, assuming the process is reversible.