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Problem- A 0.7500 g sample of commercial lye, NaOH, is dissolved in water and titrated with 35.00 mL of 0.5377 M HCl. What is the percent purity of the lye sample? (i.e., what is the mass percent of NaOH in the lye?)
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Problem- Consider a solution that contains 63.0% R isomer and 37.0% S isomer. If the observed specific rotation of the mixture is -41.0° 1) What is the specific rotation of the pure R isomer?
certain first-order reaction () has a rate constant of 1.00×10-2 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
To make sure that the white powder was all sodium chloride and not mixed with sodium hydrogen carbonate, would you need to add a little less or a little more hydrochloric acid to the reaction
Why do compounds change color when separation by TLC was repeated and dipped in an acid soultion?
If you dissolve 4 aspirin tablets in a 340mL glass of water, what is the pH of the solution and the percent dissociation?
The boiling point of a liquid increases as the pressure above the liquid increases. In contrast to boiling food in an open pot, pressure cookers trap the steam, which raises the internal pressure, which raises the boiling point of water, causing a..
of an apparatus that could be used to electroplate a ton spoon with Ag. Label the anode and cathode, suggest an electrolyte, and write the anode and cathode half reactions. explain how the process takes place.
Ignoring activities find out the molar solubility of copper (I) aside (CuN3) in a solution with a pH of 12.04. Ksp (CuN3) = 4.9 × 10-9; Ka (HN3) = 2.2 × 10-5.
Why are acidic substituents on the aromatic rings helpful in conducting the suzuki coupling reaction in water?
Use the observations and arrange the following five reduction half-cell reactions in order, the one with the largest positive reduction potential listed first.
Why do I add strong acid (e.g. HCl) to the salt of a weak acid (ammonium acetate) to bring UP the pH of the buffer solution from the pKa
For three known solutions and an unknown solution of a compound in water: Which one of the following values is possible as the molarity of the unknown
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