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Acetic acid, HC2H3O2, is a weak acid (Ka= 1.8 * 10^-5). solution A is 100.0mL of 0.10 M acetic acid, and Solution B is prepare by adding 0.0050 mol solid NaOH to solution A. One more 0.0050 mol of solid NaOH is added to solution Solution B to make Solution C. the solution D is adding 0.0050 mol more solid NaOH into solution C. Compute the pH for each of the solution A, B, C and D. Presume the volume of the solutions keeps unchanged.
An enzyme (MW = 20,250) catalyzes the hydrolysis of a newly discovered substrate. The kcat was found to be 2000 sec-1 and Km = 0.05 M. Using this information answer the following questions.
Calculate pCO2+ at each of the following points in the titration of 25.00 mL of 0.02022 M CO2+ by 0.03855 M EDTA at pH 6.00.
During the synthesis of methyl 3-nitrobenzoate, when the reaction mixture is poured on ice, the product separates out as a solid. Why
A chemist needs to determine the concentration of a solution of nitric acid, HNO_3. She puts 865 mL of the acid in a flask along with a few drops of indicator.
when the following equation is balanced using the smallest possible integers what is the exponent of n2o in the
An electron in a hydrogen atom relaxes to the n = 4 level, emitting light of 114 THz. What is the value of n for the level in which the electron originated
Calculate the formal concentrartion of a sodium acetate solution prepared by diluting 45.0 mL of a solution containing 25.0 ppm sodium acetate
A water heater contains 55 gallons of water. How many Kwh of energy necessary to heat the water heater by 25 degree celcius
Calculate the solubility of calcium oxalate in plain water and the concentrations of calcium and oxalate ions in a 0.010 M Ca(NO3)2 solution
Determine the correct formula for this compound; use the "rule of 13" and substitute in O's and N's to generate the possible formulas (ie do not simply use online software to do this problem).
Why is cycloheptatrienone stable while cyclopentadienone is quite unstable. Explainthe difference in their stabilities.
the solubility of benzoic acid in water is6.8g100ml at 95 c and 0.3g100ml at 25 c. you are given 10g ofbenzoic acid.
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