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Problem- We wish to prepare a buffer of pH 10 using common laboratory reagents. How many mL of 6M HCl would we have to add to a solution prepared by adding 100 mL of 15M NH3 to 200 mL of water? Ka of NH4 + = 5.70x10-10, pKa = 9.24.
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solution requires 18.6 mL of 0.200 M NaOH to reach the end point of the titration, what is the molarity of the acetic acid solution? CH3COOH (aq) + NaOH(aq) CH3COONa (aq) + H2O(l)
if potassium bromide of 25.5 grams is dissolved in enough H 2 O to make 1750 mL of solution, determine the molarity of the solution?
An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the course of the reaction. An instantaneous reaction rate is the rate at a particular moment in the reaction and is usuall..
Calculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom.
Will the oligopeptide Gly-Met-Tyr or the DNA sequence AGTTCACT contain more information. Or could it be the same or is it not actually possible to compare
What mass of this substance must evaporate in order to freeze 160 g of water initially at 19 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c. K}.)
Let's assume that your education has led you to rob armored cars. In your latest heist, if you were faced with bags of coins that weighed the same, which bag would you take: pennies, nickels, dimes or quarters
a reaction that establishes equillibrum with almost no reactants pressent will be one of the following. a) exergonic reaction b) has a negative G degree c) has a large keq d) all of the above
Question- In a kinetic reaction of a food colorant with sodium hypochlorite why are the dyes colored. And why does the color disappear when a dye reacts with sodium hypochlorite
Problem- In the experiment of classifying matter by properties what common substance can be found in all three physical states under various atmospheric conditions. Give a common name. For each state.
How many milliliters (mL) of a 1.28 M sulfuric acid solution are needed to neutralize 60.2 mL of a 0.427M sodium hydroxide solution.
Calculate the pH of a solution prepared by mixing 50mL of a 0.10 M CH3NH2 solution with 25mL of a .20M HCl solution. (Kb CH3NH2 = 4.4 x 10^-4)
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