During an extraction process a water solution of acetic acid is contacted with the solvent hexanol. the water phase before the extraction has a total mass of 400 g and the mass fraction of acetic acid is xfeed = 0.115. after the extraction the mass fractions of acetic acid in the organic extract is xextract = 0.096 and in the water raffinate is xraffinate = 0.005. a) draw a process diagram for the extraction process incl. values of known quantities and symbols of unknowns. b) how many independent mass balances can be written for the process? c) how many unknowns are found? d) how many dof? e) calculate the mass of hexanol (in grams), which is needed for the extraction and the mass of the organic extract and the water raffinate. f) calculate the mass loss of acetic acid in the water phase and control that it is equivalent to the gain of acetic acid in the organic phase.

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?

What is a metal replacement reaction

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules