Solution

$(1)$ Fill in the State Table $($all pressures in Pascals, all volumes in cubic meters, all temperatures in K$).$

$(2)$ Fill in the Process Table $($all entries in Joules$).$

$(3)$ Find the Totals:

$(4)$ Find the heat input $($from "cold reservoir"$)$ and the heat output $($to "hot reservoir"$)$:

$(5)$ Find the performance coefficient of the refrigerator: