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A gas mixture containing 80.0 mole% N2 and the balance n-hexane flows through a pipe at...

A gas mixture containing 80.0 mole% N2 and the balance n-hexane flows through a pipe at a rate of 100.0 m3/h. The pressure is 2.00 atm absolute and the temperature is 140.0°C.

a. What is the molar flow rate of the gas?  

b. To what temperature would the gas have to be cooled at constant pressure in order to begin condensing hexane?

c. To what temperature would the gas have to be cooled at constant pressure in order to condense 85.0% of the hexane?

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