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so the dyes to be seperated were 0.25 sodium fluorescein, 0.2% methylene blue and a dye mixture. When 95% ethanol was used as the buffer only the mixture and methylene blue travelled up the plate, but when 65% ethanol was used as the buffer all 3 of them travlled up the plate. why did sodium fluorescein not move with 95% ethanol?
Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (OJ = 31.6x10^-6 and milk = 3.16x10^-8), complete the reaction table for vinegar. Then calculate the acidity constant. Please show all work in solving the probl..
Assuming the delta S does not change with temperature, estimate the temperature at which iodine would sublime.
calculate the distance traveled by the light during the brief delay required for the sound to reach you.
write a balanced equation for the reaction of phosphorus trichloride pcl3 with water h2o forming phosphorous acid h3po3
M. tuberculosis, the organism that causes tuberculosis, can be completely destoryed by irradiation with UV light with a wavelength of 254 nm. What is the frequency?
the reactants in a Diels-Alder reaction are used in a 1:1 ratio. In this experiment, one reagent is used in excess. Which reagent is in excess, and why is it important that so much of it be used?
At equilibrium, it is found that .25 moles of COCl2 remain. What is the equilibrium concentration of CO?
The solubility of caffeine in water is 2.2mg/mL at 25 degrees celsius and 670 mg/mL at 100 degrees celsius. How many mL of boiling water would it take to dissolve 23g of caffeine
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction?
Solid Lithium hydride is added to water. Find the complete molecular, complete ionic, and net ionic formulas.
find the molarity when 7.85 moles aluminum chloride are dissolved in enough water to make a total of 600. mL
For the following reaction, denote whether the equilibrium lies with the products or with the reactants.2NO2(g) + 02(g) 2NO2 (g) Kp = 5.0*1012
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