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Consider the titration of a 25.0 mL sample of 0.110M HC2H3O2 with 0.130M NaOH. Determine the pH at one-half of the equivalence point. (initial pH=2.85, the volume of added base required to reach the equivalence point=21.2 mL)
A volume of water was delivered using a buret and experimentally determined to have a mass of 2.00-g. What was the final volume of water on the buret if the inital was 0.44-mL? [assume the density of water is 1.00g/mL]
A voltaic cell is based on the reaction Sn + I2 = Sn2+ + 2I-.
Using Henry's Law to calculate gas solubility If air contains 78% N2 by volume, what is the solubility of N2 in water of 25oC and 1 atm (Henry's constant kH for N2 in H2O at 25oC = 7 x 10-4 mol/L.atm)?
For the same atoms at the lattice points, which lattice exhibits the lowest density? (please explain your reasoning) (A) body-centered cubic (B) face-centered cubic
Suggest why Po-210 and At-211 are the isotopes of those elements with the longest half-lives.
After filtering off this precipitate, the pH is adjusted to 8 and H2S is again added; no precipitate forms. No precipitate forms upon addition of (NH4)2HPO4. The remaining solution shows a yellow color in a flame test. Based on these observations,..
The pH of the solution at the equivalence point, The pH of the solution after 40.0 mL of HCl are added.
Determine the percent yield if An 8.50 grams sample of Ammonia gives 12.0 g of Nitric Oxide?
A nitric acid solution containing 71% HNO3 (by mass) has a density of 1.42g/mL. how many moles of HNO3 are present in 1.00L of this solution.
If the system below is at equilibrium in a closed vessel and a small amount of nitrous acid is added, what would be expected to happen
If 20mL of .10M NaOH is added to 45mL of .20M HC2H3O2, what is the pH of the resulting solution at 25 degrees Celsius
William places 20 mL of a 2.6 M sulfuric acid solution into a small flask with a few drops of phenolphthalein indicator. He fills a buette with and 1M NaOH. How many mL of the NaOH solution will he use when the solution in the flask just turns pin..
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