$6-55*$ Refrigerant$-134$a enters the condenser of a residential heat pump at $700$ kPa and $30C$ at a rate of $0\mathrm{.}024k\frac{g}{s}$ and leaves at $700$ kPa as a saturated liquid. If the compressor consumes $1\mathrm{.}5$ kW of power, determine $(a)$ the COP of the heat pump and $($b$)$ the rate of heat absorption from the outside air. Answer: $($a$)2\mathrm{.}87$; $($b$)2\mathrm{.}81$ kW

I specifically struggle finding enthalpy so that step needs to be done in detail.