(8 pts total) A gas stream containing 65mol% ethanol (normal boiling Tb=78.5C ) and the balance n-propanol (Tb=97C) continuously flows through a horizontal pipe with an inner diameter of 5cm at a steady-state flow rate of 100mol/s. The gas stream enters the pipe at 100C and 1atm and is cooled at constant pressure to its dew point and beyond (so that some of the exiting fluid is a liquid). a) (6 pts) State and justify how each of the following variables would change from one end of the pipe to the other ( or can't tell): (i) V(L/s) (ii) H(kJ/mol) (iii) yE(mol ethanol/mol) b) (2 pts) Without doing any calculations, what can you say about the temperature at which condensation first occurs? (Give values, if possible, otherwise put upper and/or lower bounds on the values of T at the onset of condensation)