Multiple Unit Material balance problem A feed containing equimolar amounts of methanol and water is mixed with 10 moles of a 40 % mol aqueous methanol stream. The mixture enters a first separation unit that creates two streams. A top stream exits the separation unit that contains 70 % mol methanol and rest water. The bottom stream, which is 70 moles enters a second separation unit. A top stream exists the second separation unit as a 50 % methanol & 50 % water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (equimolar mixture) and the two top streams exiting the separation units have the same flow, draw the flow sheet and find the molar flow and the composition of the bottom streams existing the second separation unit?

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.