An equimolar mixture of methane and propane at −10°C and 1 bar in compressed to 50 bar in a isentropic compressor, cooled back down to −10°C, and then undergoes a Joule-Thompson expansion to 10 bar. Determine the temperature of the stream leaving the compressor, of the streams exiting the valve, the relative amounts of the vapor and liquid from the valve, and the compositions of each.