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A weak acid (HA) has a pKa of 4.015. If a solution of this acid has a pH of 4.443, explain what percentage of the acid is not ionized? Presume all H in solution came from the ionization of HA.
calculate the pH of a 1.06 x 10^-2 M solution of decongestant ephedrine hydrochloride if the pKb of its conjugate bas is 3.86
The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. What was the initial volume(L) of the system if the internal energy of the system decreased by 102.8 J
how many milliliters of 0.105 m hcl are needed to titrate each of the following solutions to the equivalence point--
what is the freezing point in c the solutions below? for water kf1.86 ckgmol. the vapor pressure of water at 45.0 c is
Classify each compound as a strong electrolyte, weak electrolyte, or non-electrolyte. HI HClO4 CH3OH HC2H3O2
The temperature of the glucose solution is 20degrees Celsius. What pressure drop must be applied across the membrane to stop the flow of water into the glucose solution. Assume that the glucose concentration is 1 mg mL^-1 and that the molecular we..
How many grams of oxygen are collected in a reaction where 265 mL of oxygen gas is collected over water at a temperature of 298 K and a total pressure of 709 torr
The Cl2 removed occupies a 10.0 L container at .500 atm at 25C. How many g of Ne are present in the original container?
What is the oxidizing agent?
Express the concentration of a 0.0760 M aqueous solution of fluroide, F-, in mass percentage and in parts per billion
Structure of a compound containing a leaving group that is more hindered than the leaving group in t-butyl bromide
14.0 moles of gas are in a 6.00 tank at 22.6. calculate the difference in pressure between methane and an ideal gas
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