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concentration of the stock solution. B. Calibration Check of Electrode 1. Carefully pipet 25.00 mL of the most dilute fluoride standard into a 50-mL volumetric flask and dilute to the mark with the TISAB. Stopper the flask and thoroughly mix the solution. 2. Transfer this solution to a 100-mL plastic beaker. Place the beaker on a stirring plate,
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The pH of solution A is 3. Solution B contains a weak acid with a pKa of 9. What is the pH of solution B? Answer = pH is 5 Problem 4 You have a powder that dissolves in water to form a strong acid. You dissolve 2g of the powder in 100ml of water, and measure the pH to be 4. You would like to form 100ml of a solution with pH 5. How many grams of Jan 29, 2010 · B. 0.4 g C. 20 g D. 40 g Problem 4. You have two solutions, both with a concentration of 0.1M. Solution A contains a weak acid with a pKa of 5. The pH of solution A is 3. Solution B contains a weak acid with a pKa of 9. The pH of solution B is: A. 1 B. 2 C. 4 D. 5 Problem 5 The mass of beaker and KHP was recorded to the neaest 0.001g and the mass of KHP was calculated by difference and it was recorded in a table. 30 mL od distilled water was added to the beaker, then the solution was stirred until the KHP has dissolved completely. III.
Problem Solution Sample Essay. Global warming is one of the biggest threats humans face in the 21st Century and sea levels are continuing to rise at alarming rates. This essay will first suggest that the biggest problem caused by this phenomenon is the flooding of homes and then submit building flood...
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