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Write an equation showing the net reaction that occurs when a strong acid is added to a CO3 2- / HCO3 - buffer solution (for carbonic acid, Kal = 4.2 x 10^-8, Ka2 = 2.4 x 10^-8.
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source
isothermally against a constant external pressure of 2.85 atm from 3.12 L to 11.85 L. Calculate the values of q, w, delta H, delta S system, delta S surroundings, delta S universe and delta G.
A helium-filled weather balloon has a volume of 714 L at 23 oC and 750 mmHg. It is released and rises to an altitude of 3.78 km, where the pressure is 546 mm Hg and the temperature is -2oC. The volume of the balloon at this altitude is
For the following reaction, calculate the concentration of C(aq) at equilibrium when .135M B solution is alllowed to react with A. A(liquid) + B(aq) ---> C(aq) + D(aq)
Calculate the pH of a solution that is .150 M in sodium formate and .200 M in formic acid (Ka=1.8*10^-4)
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00. Assuming there was no Pb-206 present when the sample was formed, how old is it
On a smoggy day in a certain city the ozone concentration was 0.54 ppm by volume. Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure
What is the freezing point of a solution of ethylene glycol (antifreeze), a nonelectrolyte, that contains 140. g of C2H6O2 dissolved in 290. g of water? Use molar masses with at least as many significant figures as the data given.
Of the following compounds, which would be considered ionic bonds and which would be considered covalent bonds, and why
What problems might arise if a hot solution is filtered by vaccum filtration. What is meant when aniline is referred to as the "limiting reagent" in the reaction with acetic anhydried
Suppose that 1.331 g of impure barium hydroxide is dissolved in enough water to produce 250. mL of solution and that 35.0 mL of this solution is titrated to the stoichiometric point with 17.6 mL of 0.0935 M HCl(aq). What percentage of the impure s..
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