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Question 1: HA is a weak acid. Its ionization constant, Ka, is 4.9 x 10-13. Calculate the pH of an aqueous solution where the initial concentration of NaA is 0.049 M.
Question 2: 0.131 mol of a weak acid, HA, is placed in enough water to produce 1.00 L of solution. The final pH of this solution is 1.22. Calculate the ionization constant, Ka, of HA.
Question 3: 0.683 mol of a weak acid, HA, and 12.4 g of NaOH are placed in enough water to produce 1.00 L of solution. The final pH of this solution is 4.50. Calculate the ionization constant, Ka, of HA.
Create a 5-step procedure you think will work to compare the efficiency of the light emitted by an incandescent light bulb to a fluorescent light bulb.
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After 20 days, the sample was fixed utilizing the Winkler method and titrated using a 0.0125 M sodium thiosulfate solution to a starch-iodide endpoint after addition of 6.26 mL of the sodium thiosulfate solution. Define what is the BOD20 and the ul..
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