a wet gas is produced through a two -stage seperator system. the 555 psia -89degree fahrenheit separator produces 170,516 scf/stb, and the 70 degree farenheith stock tank produces 492 scf/stb. the stock-tank liquid has a gravity of 64.7 degree API. the compositions of the surface production are given below. calculate the composition of the reservoir gas. McCain exercise 7-5