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How many moles was that?

How many moles was that?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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QUESTIONS AND PROBLEMS TƯ you had added 50 ml of water to a sample of KHP instead of 30 ml, would the th tion of that sample then have required more, less, or the same amount of base? Expini 2 A student weighed out 1.106 g of KHP How many moles was that? mol 3. A titration required 18.38 mL of 0,1574 M NAOH solution. How many moles of NROR were in this volume? mol 4. A student weighed a sample of KHP and found it weighed 1.276 g. Titration of this KHr required 19.84 mL of base (NaOH), Calculate the molarity of the base. M 5. Forgetful Freddy weighed his KHP sample, but forgot to bring his report sheet along, so he recorded the mass of KHP on a paper towel. During his titration, which required 18.46 mL of base, he spilled some base on his hands. He remembered to wash his hands, but forgot about the data on the towel, and used it to dry his hands. When he went to calculate the molarity of his base, Freddy discovered that he didn't have the mass of his KHP. His kindhearted instructor told Freddy that his base was 0.2987 M. Calculate the mass of Freddy's KHP sample. . What mass of solid NaOH would be needed to make 645 mL of Freddy's NaOH solution?
Transcribed Image Text:QUESTIONS AND PROBLEMS TƯ you had added 50 ml of water to a sample of KHP instead of 30 ml, would the th tion of that sample then have required more, less, or the same amount of base? Expini 2 A student weighed out 1.106 g of KHP How many moles was that? mol 3. A titration required 18.38 mL of 0,1574 M NAOH solution. How many moles of NROR were in this volume? mol 4. A student weighed a sample of KHP and found it weighed 1.276 g. Titration of this KHr required 19.84 mL of base (NaOH), Calculate the molarity of the base. M 5. Forgetful Freddy weighed his KHP sample, but forgot to bring his report sheet along, so he recorded the mass of KHP on a paper towel. During his titration, which required 18.46 mL of base, he spilled some base on his hands. He remembered to wash his hands, but forgot about the data on the towel, and used it to dry his hands. When he went to calculate the molarity of his base, Freddy discovered that he didn't have the mass of his KHP. His kindhearted instructor told Freddy that his base was 0.2987 M. Calculate the mass of Freddy's KHP sample. . What mass of solid NaOH would be needed to make 645 mL of Freddy's NaOH solution?
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