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Butanoic acid has a partition coefficient of 3.0 favoring benzene when distributed between water and benzene. Determine the formal concentration of butanoic acid in each phase when 100mL of 0.10 Maqueous butanoic acid is extracted with 25mL of benzene (a) at pH4.00 and (b) at pH 10.00.
A solution made by adding 20g of urea to 125g of water has a vapor pressure at room temperature of 22.76 torr, whereas the vapor pressure of pure water at 25 degrees celsius is 23.76 torr.
Calculate pCu2+ at each of the following points in the titration of 50.0 mL of 0.001 M Cu 2+ with 0.001 M EDTA at pH 11.00 in a solution whose NH3 concentration is somehow fixed at 0.100 M: a) 45.0 mL b) 50.0 mL c) 55.0 mL
Which of the following gases would be expected to show the greatest deviation from ideal behavior at the same temperature and pressure
Iron (3) oxide and aluminum powder form an extremely violent reaction (called Thermite) when burned together. This is an oxidation reduction reaction. One of the products formed is pure iron. Determine what element is getting oxidized.
A sample of pure oxalic acid hydrate was obtained by extracting a plant called Snake Tongue. A 3.000 g sample of the materials heated carefully in a vacuum oven until no more mass was lost from the sample.
Calculate the pH after each of the following volumes of NaOH have been added: 0 mL, 10.00mL, 19.90mL, 20.00mL, 20.10mL
What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).
A quantity of N2 is kept in a 12.8 L contianer at a temperature of 42 C and at pressure of 4.7 atm. how many grams of N2 are in the container?
Seawater has a concentration of 400 ppm Ca. You wil first prepare a 10-fold diluted Buzzards Bay seawater solution (40.0 ppm Ca). Pipet 10.00 mL of Buzzards bay seawater into a 100.0 mL volumetric flask and fill to mark with deionized water
Plot the speed distribution function for a.) Helium, O2,and UF6, at the same temperature, and b.) CO2at 300 K and 1000 K.
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
The use of high salts, e.g. "salting out" is a common technique used during protein purification. Describe the chemical process underlying this method.
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