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A buffer solution contains acetic acid (HC2H3O2) at a concentration of 1.15 M and sodium acetate (NaC2H3O2) at a concentration of 2.05 * 10 to -2 M. The value of Ka for acetic acid is 1.75 * 10 to -5. Calculate the pH of this solution using the Henderson-Hasslebach equation.
Give the structure of a hydrocarbon that has six carbon atoms and three vinylic hydrogens and two allylic hydrogens
the compound as2i4 is synthesized by reaction of arsenic metal with arsenic triiodide. if a solid cubic block of
The rate of an enzyme-catalyzed reaction usually increases with temperature, but then decreases after reaching the "optimal temperature."
what is the molality of a solution prepared by dissolving 10.0 grams of methylamine ch3nh2 in 50.0 ml of ethanol
Muriatic acid is a HCl solutin available in hardware stores. A 3.00-ml sample of muriatic acid required 15.44 ml of 2.04 M NaOH for complete neutralization
To 333 milliliters of a 0.120 molar Pb(NO3)2 solution, 0.667 milliliteres of 0.435 molar KIO3 is added. Calculate the concentrations of Pb+2 and IO3- in the solution at equilibrium.
Titration of 664 mg of a pure organic carboxylic acid, H2A, showed a rapid change in pH at 40.00 mL and at 80.00 mL of 0.100 M NaOH titrant. When 40.00 mL of NaOH was added, the pH was 5.85, and at 60.00 mL of NaOH the pH was 8.08. What is the mol..
If you have 340.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture. Use 1.00 g/mL as the density of water.
The jewelry contains only gold and silver, which have densities of 19.3 and 10.5 , respectively. If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in th..
Method for Trapping a Gas, The decomposition of 3-sulfolene to form 1,3-butadiene generates 1 mole of sulfur dioxide gas per mole of 1,3-butadiene. Substantial quantities of SO2 would be generated if this decomposition were carried out on a large ..
They are used as foaming agents, propellants, and refrigeration fluids. Freons are controversial because of the damage they do to the ozone layer in the stratosphere. A 5.87 g sample of a particular freon in a 3.45 L bulb at 25.00°C has a pressure..
Explain what is meant by a spontaneous process. Is a spontaneous process necessarily a rapid one? Explain, and provide a real reaction as an example to illustrate your answer.
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