+ 17.4 Mastery 1. Alpha Plots for W... 2 req Question Question Question 2. Amino Acids Submit The following is an alpha plot for a monoprotic weak acid, HA. 1.0 α 0.5 2 8- 10 12 14 pH HA Α΄ (1) Estimate the pH at which is there a 50:50 mixture of acid and conjugate base? 7 (2) At pH = 9.0, most of the substance is in the form of a. HA b.A (3) What is the approximate fractional abundance of the conjugate base at pH = 6.0? (4) Estimate the value of Ka for the acid. Submit Answer Current score: 1/2 pts (50%) 1. Alpha Plots for Weak Monoprotic Acids: This is group attempt 1 of 5 Back Autosaved at 12:27 PM

+ 17.4 Mastery 1. Alpha Plots for W... 2 req Question Question Question 2. Amino Acids Submit The following is an alpha plot for a monoprotic weak acid, HA. 1.0 α 0.5 2 8- 10 12 14 pH HA Α΄ (1) Estimate the pH at which is there a 50:50 mixture of acid and conjugate base? 7 (2) At pH = 9.0, most of the substance is in the form of a. HA b.A (3) What is the approximate fractional abundance of the conjugate base at pH = 6.0? (4) Estimate the value of Ka for the acid. Submit Answer Current score: 1/2 pts (50%) 1. Alpha Plots for Weak Monoprotic Acids: This is group attempt 1 of 5 Back Autosaved at 12:27 PM

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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INSTRUCTIONS 1. Please enumerate all given values. 2. Identify all unknown values 3. Write the formula first before substituting the values. 4. Enclose final answers in boxes. 5. Do not round off immediately. Consider the whole value during computations. 6. Round off final answers to 2 DECIMAL PLACES ONLY. Problem: A 0.5 L sample contains 10.0 g of hemoglobin with an osmotic pressure of 5.9 torr at 22ºC. What is the molar mass of hemoglobin if 760 torr is the same with 1 atmosphere?
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INSTRUCTIONS 1. Please enumerate all given values. 2. Identify all unknown values 3. Write the formula first before substituting the values. 4. Enclose final answers in boxes. 5. Do not round off immediately. Consider the whole value during computations. 6. Round off final answers to 2 DECIMAL PLACES ONLY. Problem: What volume (mL) sulfuric acid solution (98.0% of the concentrated sulfuric acid by weight; density 1.84 g/mL) and the volume of water are used in the preparation of 2.00 L of a 4.00 N solution?
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GENERAL INSTRUCTION: 1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to…