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Saccharin (C7H5NO3S) is sometimes dispenced in tablet form. Ten tablets with a total mass of 0.5894g were dissolved in water. They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride solution. The mass of BaSO4 obtained was 0.5032g. What is the average mass percent of saccharin in the tablets?
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25C. Calculate the pH at 25C for a solution formed by mixing 28.0 mL of 0.260 M HC5H3O3 and 23.0 mL of 0.21 M NaC5H3O3 and diluting the total volume to 125 mL.
Determine the pH of a solution that is 1.80% NaOH by mass. Assume that the solution has density of 1.01 g/ml.
A chemist dissolves 0.099 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 36.1-mL sample of this solution
If 3.25ml of vinegar needs 40.0 of 0.130M NaOh to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.30qt sample of this vinegar.
when a metal was exposed to light at a frequency of 4.49 x 10^15 s^-1, electrons were emitted with a kinetic energy of 4.80 x 10^-19 J. What is the maximum number of electrons that could be ejected from this metal by a burst of light with a total ..
Find the pH of a solution and other stuff like that. How do I know what to do when dealing with different combinations of strong/weak acids and bases in regards to titration and buffers
What wavelength is expected for light composed of photons produced by an n=3 to n=1 transition in a hydrogen atom
Consider the titration of 40.0 mL of 0.050 M of the fully protonated form of tryptophan with 0.10 M KOH. Calculate the pH of the solution at the following points
Calculate the concentration of Ca2 at V = 1/2 Ve? Calculate the concentration of Ca2 at V = Ve.? Calculate the concentration of Ca2 at V = 1.1 Ve.?
Find the pH and volume (mL) of 0.477 M HNO3 needed to reach the equivalence point(s) in the titration of 2.65 L of .0750 M pyrimidine (C5N5N).
If Kp = 0.032 at this temperature, what will be the equilibrium overall pressure starting from pure CaSO4(s)?
10.0 moles of nh3 and 10.0 moles of h2 are introduced into a 2.00 l flask. at equilibrium 3.0 moles of nh3 gas remain.
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