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Uric acid dissociates as exposed in the figure at the right with a pKa of 5.80 as well as can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated as well as unprotonated forms. A urine sample was found to have a pH of 5.35.
Explain what would be the ratio of the unprotonated form, A- to the protonated form, HA for uric acid in this urine sample?
a solution of sulphide ct 10-6 m is blended into a 0.4 m sodium chloride solution in a closed container. plot a log
Calculate the expectation value for the kinetic energy of the H atom with the electron in 2s orbital. Compare your result with total energy
What is the maximum mass in grams of aluminum chloride that could be obtained from 2.50 mol of barium chloride and excess aluminum sulfate
Which of the molecules N2, NO, O2, C2, F2, and CN would you expect to be stabilized by (a) the addition of an electron to form the anion (b) the removal of an electron to form the cation
Calculate the pH of a solution that results from mixing 37.6 mL of 0.127 M ammonia with 48.3 mL of 0.119 M ammonium chloride.
10 ml of a silver nitrate solution is titrated to the equivalence point with 8.5 ml of a .1100 M HCL solution. What is the concentration of the silver nitrate?
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
What volume of O2 is needed to react completely with 20.9L of H2 to give H2O if all gases are measured at 25 degrees C and 1atm? The Balanced equation is: 2H2+O2 ----> 2H2O
Proteins are least soluble and often precipitate when the pH of the solution equals their pI. This property may be used to selectively permeate many other contaminating proteins, leaving the protein of interest in solution
A 12 mL sample of a solution of AlBr3 was diluted with water to 42 mL. A 30 mL sample of the dilute solution was found to contain 2.26 M Br-. What was the concentration of AlBr3 in the original undiluted solution
If Delta H = -80.0 KJ and Delta S = -0.200 KJ/K, the reaction is spontaneous below a certain temperature. Calculate that temperature.
One of the treatment for gangrene and "the bends" is a hyperbaric oxygenation. this occurs in a chamber in which oxygen is used at higher than normal pressures.
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