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A solution containing 50.0 mL of 0.15 M C2H3COOH is titrated with 0.15 M NaOH. What is the pH of the solution after the addition of 25 mL of NaOH? pKa for C2H3COOH is 4.76.
It takes 78.2 J of energy to raise the temperature of 45.6 g of lead by 13.3 oC. What is the specific heat capacity of Pb? What is the molar heat capacity of Pb.
Calculate the partial pressure of each gas if the composition of the air is: a) 21% oxygen, 78% nitrogen, .3% carbon dioxide
Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of 0.10 M HCl to each one. What accounts for the difference in the hydronium ion concentrations
Health Canada recommends a an upper level intake of Na to be 2300 mg. How many ounces (oz) of the meat must be ingested for a person to meet this level?
A 24.9 mL volume of HCl reacts completely with 55.0 mL of aqueous Na2CO3. The reaction is as follows:2HCl (aq)+ Na2CO3(aq)-> CO2(g)+H2O(l)+2NaCl(aq)
Determine the number of vacancies per cm3 in gold at 900?C, given a vacancy formation energy of 0.98 eV/atom and an Arrhenius pre-exponential factor of one
A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas.The sulfur dioxide reacts with solid calcium oxide to form solid calcium sulfite CaO(s)+SO2(g)?CaSO3(s),S(s)+O2(g)?SO2(g)
As food manufacturers add vinegar to food preparations to make them tart, rather than pure acetic acid,
Write a mechanism for the base-catalyzed hydrolysis of methyl salicylate. 2.) Devise another route by which methyl salicylate can be converted to acetylsalicylic acid
Enough monoprotic acid is dissolved in water to generate 0.0163 M solution. The pH of the resulting solution is 6.31. Calculate the Ka of the acid.
Determine the linear and volume shrinkages that occur during the drying and sintering of a gel containing 5 vol% solids if the dried gel and the sintered gel have a solids content (relative density) of 50% and 100%, respectively
The Ka for lactic acid is 1.4x10^-4. What is the pH of this buffer after .10 mol of solid NaOH has been added?
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