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Explain how many mL of a 2M solution of boric acid must be added to 600mL of a solution of 0.01 M sodium borate in order to bring the pH to9.45 (pKa boric acid: 9.24)?
The volume of .05 M KOH solution that contains the same number of mmol as .1 mL of tert-butyl bromide? For the number of mmol of tert-butyl bromide, I got .8912 mmol.
What is the value of the equilibrium constant at 500 K for a chemical equilibrium that as a delta H value of 250 kj/mol and a delts S value of 48 J/mol K?
The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?
Each was extracted with three 5-mL aliquots of CCl4 containing an excess of 8-hydroxyquinoline. The extracts were diluted to 25 mL and their fluorescence was measured. What is the concentration of the zinc in the unknown solution?
Ammonium nitrate, NH4NO3, is an ingredient in fertilizer. It provides nutrient nitrogen. How much nitrogen is in exactly one U.S. ton of ammonium nitrate? Answer in kilograms and show entire process.
You are given 2.56 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.89 of aspirin. Calculate your percent yield of aspirin
how many milliliters of a stock solution of 2.00 m kno3 would you need to prepare 100.0 ml of 0.150M KNO3
At a given temperature, 0.150 mol NO, 0.100 mol Cl2, and 0.250 mol ClNO were placed in a 10.0 L container. The following equilibrium is established
question when a mix of 10 ml of 2 m na2co3 solution with 8 ml of 1 m hcl solution co2 is producedna2co3 aq 2 hcl aq
When Zn(OH)2(s) was added to 1.00 L of a basic solution, 1.30*10^-2 mol of the solid dissolved. What is the concentration of OH- in the final solution
if 400 ml of a 0.100M acetic acid and 200 ml of 0.100m solution acetate are mixed, what is the pH?
The term solution is synonymous with which of the following. A. compound B. element C. homogeneous mixture D. heterogeneous mixture
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