Astream enters distillation tower #1 containing methanol (m), ethanol (e and wate (w), with composition as shown on next page. a vapor stream. leaves tower #1, with total flow rate of 100 mol s. containing 90 mol% m and 10 mol% e no water leaves in this vapor stream. the liquid stream leaving tower #1 contains only ethanol and water (no methanol), and is fed to tower #2.90% of the water in the feed to tower #2 leaves the tower in the liquid stream. this liquid stream has a composition of 5 mol% ethanol, 95 mol% water. the vapor stream leaving tower #2 also contains e and w. (10 points) completely label the diagram; assign variable names (with units) as needed. (5 points) perform a degree of freedom for tower #1. number of unknowns: number of equations: degree of freedom (5 points) perform a degree of freedom for the overall process. number of unknowns: number of equations degree of freedom names: names names: names (45 points) calculate the total flow rate and compositions of each stream. show composition in mole%. show your work on the next page, write answers here. feed stream entering tower #1 . flow rate. liquid stream leaving tower #1, flow rate mol/min to-, mol% e, ,41-mol% w mol% e, mol% w mois ; composition: -mol min: composition: vapor strearm leaving tower #2, flow rate",? molmin liquid stream leaving tower #2.

Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. one potential application of nanotechnology is the construction of artificial cells. the simplest cells would probably mimic red blood cells, the body's oxygen transporters. for example, nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person's bloodstream. if the person needed additional oxygen-due to a heart attack perhaps, or for the purpose of space travel-these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. suppose that the nanocontainers were cubic and had an edge length of 24 nanometers. part a part complete what is the volume of one nanocontainer? (ignore the thickness of the nanocontainer's wall.) express your answer using two significant figures. v v = 1.4ă—10â’20 l previous answers correct significant figures feedback: your answer 1.3824â‹…10â’20 = 1.382ă—10â’20 l was either rounded differently or used a different number of significant figures than required for this part. if you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. part b suppose that each nanocontainer could contain pure oxygen pressurized to a density of 81 g/l . how many grams of oxygen could be contained by each nanocontainer?

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced. be sure your answer has the correct number of significant digits.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt