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When 5 drops of 0.10 M NaOH were added to 20 ml of the buffer in problem 3, the pH went from 3.60 to 3.71. Write a net ionic equation to explain why the pH didn't go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20ml 0.00025 M HCL, which also would have a pH of 3.60
Determine the enthalpy of the reaction. Assume that the density and the specific heat of the solution are the same as water. Incude the correct sign.
Ninhydrin forms a pink-colored compound when it reacts with amino acids left in a fingerprint. The solution is prepared by mixing 6.00 g of ninhydrin with 1000.0 mL of acetone. What is the molarity of ninhydrin, given its chemical formula is C9H6O..
Compare trials 1 and 2 to determine the order of reaction with respect to iodide ions. How did the concentration of iodide ions change in these two trials, and how did the rate change accordingly? What is the reaction order for iodide?
A certain reaction has deltaH standard = 57.3 Kj, DeltaS standard =235 J/K. At what Temp will equilibrium be reached at standard conditions, in celsius
what mass of sucrose should be combined with 455 g of water to make a solution with an osmotic pressure of 8.75 atm at
The vapor pressure of pure ethyl bromide at this temperature is 400.0 torr. Assuming an ideal solution, what is the molecular mass of the compound?
The solubility of oxygen in lakes high in the rocky mountains is affected by the altitude. If the solubility of O2 from the air is 2.67 x 10^-4 M ar sea level (1.00 atm) and 25 degrees C
The density of the waste is 85.3 Ibm/ft3. Calculate the weight of the pond contents in Ibf using a single dimensional equation for your calculation
For one of the solutions you make up for this week's experiment, 8.00 mL of 2.0E-3 M iron(III) nitrate solution is mixed with 1.00 mL of 2.0E-3 M potassium thiocyanate solution,
If an ideal gas has a pressure of 8.79 atm, a temperature of 19.18 °C, and has a volume of 19.91 L, how many moles of gas are in the sample
Lactic acid (found in sour milk) has an empirical formula of HC3H5O3. A 1.0 g sample of lactic acid required 17.0 mL of 0.65 M NaOH to reach the end point of a titration. What is the molecular formula for lactic acid
How much heat would be released if 12.0 g of methane, CH4, was completely burned in oxygen to form carbon dioxide and water at standard state conditions
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