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What is the pH of this buffer? The Ka of lactic acid, HC3H5O3, is 1.410?4. (a) Suppose buffer #1 is prepared using 40.0 mL 0.1 M HC3H5O3 and 60.0 mL 0.1 M C3H5O3- to give a final volume of 100.0 mL. What is the pH of this buffer? (b) Suppose a buffer #2 is prepared using 60.0 mL 0.1 M HC3H5O3 and 40.0 mL 0.1 M C3H5O3- to give a final volume of 100.0 mL. What is the pH of this buffer? (c) Calculate the pH of each buffer if 0.001 moles of OH- are added to each
The electron is passed down an electron-transport chain, at the end of which NADP+ is reduced. The reduction potentials of P700+, A and NADP+ at pH7 and 25 oC are 0.490V, -0.900V, and -0.350V respectively.
Once the system has reached equilibrium, 5.00 g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. Calculate the mass of NO2 in the final equilibrium mixture.
How many grams of CO2 are produced by the complete combustion of 2.00g of C8H18?
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
which cation will precipitate first. What minimum concentration of Na2SO4 is required to cause the precipitation of the cation that precipitates first
What is the molality of a solution consisting of 3.43 mL of carbon tetrachloride (CCl4; d=1.59 g/mL) in 78.4 mL of methylene chloride (CH2Cl2; d=1.33 g/mL)
Calculate the boiling point (in degrees C) of a solution made by dissolving 1.73 g of naphthalene {C10H8} in 67.1 g of benzene. The Kbp of the solvent is 2.53 K/m and the normal boiling point is 80.1 degrees C.
What is the freezing point of a solution of 1.17 g of 1-naphthol, C10H8O, dissolved in 2.00 mL of benzene at 20°C? The density of benzene at 20°C is 0.876 g/mL. Kf for benzene is 5.12°C/m, and benzene's normal freezing point is 5.53°C.
Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte.a)LiClO4 b)HClO c)CH3CH2CH2OH d)HClO3 e)CuSO4 f)C12H22O11
A large balloon is initially filled to a volume of 25.0L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253 K?
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
A solution containing 6.3 X a0^-8 M benzene and 2.0 X 10^-7 M cyclohexane gave peal areas of 3950 and 4870, respectively, in a GC experiment.
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