Please answer about gas

120 MMSCFD of dry sweet natural gas consists of 70%C1,20%C2, and 10%C3 is to be cooled in a chiller from the dew point temperature of 15F to 20F at 500 psia using one stage C3 refrigeration cycle with water cooling Fig (2). The enthalpy of the gas at 15F and 500 psia with a molecular weight of 21.6lbm/lbmole is 155.00Btu/lbm. Design the refrigeration cycle (Showing T,P, State, and flow rates of each stream in the cycle in lbm/hr ). Assuma Dbacan