We have a feed that is a binary mixture of methanol and water (55.0 mol% methanol) that is sent to a system of two flash drums hooked together. the vapor from the first drum is cooled, which partially condenses the vapor, and then is fed to the second flash drum. both drums operate at a pressure of 1.0 atm and are adiabatic. the feed rate to the first drum is 1000 kmol/h. we desire a liquid product from the first drum that is 30.0 mol% methanol (x -0.30). the second drum operates at a fraction vaporized of (v/f)2 = 0.25. the equilibrium data are in table 2.7. a. sketch the process labeling the different streams. b. find the following for the first drum: vapor mole fraction yi, fraction vaporized (v/f), and vapor flow rate v c. find the following for the second drum: vapor mole fraction y2, liquid mole fraction x2, and vapor flow rate v2

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

An observation that requires measurement is called quantitative observable or qualitative