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Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms. A urine sample was found to have a pH of 5.57.
A urine sample has a ph of 5.57
What would be the ratio of the unprotonated form, A%u2013, to the protonated form, HA, for uric acid in this urine sample? [A-]/[HA]
A sample of CO2 gas at 795 torr is cooled from 25°C until the new pressure is 125 torr. Calculate the new temperature of the gas.
If 164 mL of wet H_2 is collected over water at 24 C and a barometric pressure of 736 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
Compute the mass of an electron if the difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 grams?
When 7 mL of a solution containing 3 M KNO3 is diluted to 21mL, a dilute solution is formed. What is the NO3- concentration in 10mL of the dilute solution?
What are five general properties of aqueous acids? Name some common substances that have one or more of these properties.
Calculate the sample weight of liquid bleach containing 5.0% by weight of NaOCl that would oxidize enough I- to consume 0.80 mL of 0.15 M sodium thiosulfate.
Important information about Galvanic cell, Consider a galvanic cell consisting of Sn wire immersed in a solution containing 10^-10 M Sn(NO3)subscript 2 and 1 M HNO3 and Ag wire immersed in 10^-2 M AgNO3 and 1 M HNO3.
what volume(in mL) of 0.0887 M MgF2 solution is needed to make 275.0mL of 0.0224 M MgF2 solution.
Given that the Ka of boric acid is 5.8x10^-10M, what is the pH of a 0.50M boric acid solution? Are there any good approximation available?
The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder. On ignition, the reaction that takes place is 6 NH4ClO4(s) + 10 Al(s) ? 5 Al2O3(s) + 3 N2(g) + 6 HCl(g) + 9 H2O(g)
A gas mixture composed of helium and argon has a density of 0.727g/L at a 755mmHg and 298K .What is the composition of the mixture by volume?
What is the mass change (in grams) accompanying the formation of CO and H2 in the water gas reaction?
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