Afeed stream containing 25 mole% methanol and 75 mole% water is separated in a continuous distillation column with a total reboiler and a partial condenser. the distillate has a methanol composition of 95 mole%. the methanol composition in the bottoms is 1 mole%. the column is operated at 1 atm.

a. what are the number of equilibrium stages required to do the separation if the feed is flashed to produce 50 mole% saturated liquid and 50% saturated vapor in the flash stage? assume the reflux ratio is 3.75 and you may assume the feed flowrate is 1000 kmol/hr.

b. what is l/d if the operating lines becomes simply yj+1 =xj

Different isotopes indicate that an element will have different numbers of

In an effort to address concerns about global warming, a power plant in portland,oregon is designed to take all of its exhaust gases from its boilers and recycle the co2 using the solvay process to make sodium hydrogen carbonate. the reaction is shown below. nh3(g) + h2o(l) + co2(g) + nacl(aq) → nahco3(aq) + nh4cl(aq) how many liters each of nh3 and co2 (both at stp) would be consumed to produce 3.00 kg of sodium bicarbonate? the volume of both nh3 and co2 would be

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.