Aliquid mixture contains 50 mol% ethanol in water and a very small amount of non- volatile impurities. it has been proposed to concentrate and purify the alcohol by stripping the ethanol from solution with an available supply of superheated steam. the solution will flow downward in a bubble-cap column counter-current to the upward flowing steam. the feed enters at 70 of and the steam at 350 of and 1 atm. [15 marks] (a) calculate the maximum ethanol concentration in the overhead vapour that can be obtained with an infinite number of equilibrium stages [3 marks] (b) what ethanol concentration and recovery in the vapour will be obtained with a column equivalent to five (5)-equilibrium stages with a steam to ethanol feed ratio of 1: 2 (mol/mol)? [12 marks]

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?