Natural gas having a molar analysis of 60% methane (CH4) and 40% ethane (C2H6) enters a compressor at 340K, 6 bar and is compressed isothermally without internal irreversibilities to 20 bar. The compressor operates at steady state, the kinetic and potential energy effects are negligible. Assume ideal gas behaviour, compute for the compressor, the work and heat transfer, each in kJ per kmol of mixture flowing.