We wish to flash distill a mixture that is 45 mole % benzene and 55 mole % toluene. feed rate to the still is 700 moles/hr. equilibrium data for the benzene-toluene system can be approximated with a constant relative volatility of 2.5, where benzene is more volatile. operation of the still is at 1 atm.

a) plot a y-x diagram for benzene.

b) if 60% of the feed is vaporized, find the liquid and vapor compositions.

c) if we desire a vapor composition of 60 mole %, what is the corresponding liquid composition, and what are the liquid and vapor flow rates?

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false