only 1 fast in one hour 1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 mL of 0.0415 M HCN to achieve a solution with a pH of 9.84.Note: the pkg of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume.INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units.Subrnit AnswerTries 0/992. What volume, in ml of 0.161 M HCO2H needs to be added to 621.2 mL of 0.0660 M NaHCO2 to achieve a solution with a pH of 4.55.Note: the pkg of HCO2H is 3.75, you may assume the 5% approximation holds, and you may assume that the volumes are additive.INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units.mLSubmit AnswarTries 0/993. What is the pH of a buffer solution prepared by adding 454 mL of 0.051 M KOH to 147 mL of 0.789 M HF?Note: the pkg of HF is 3.20, you may assume the 5% approximation holds, and you may assume that the volumes are additive.INSTRUCTIONS: Input your answer to 2 decimal places in standard notation (example: 1.23) and DO NOT include the units.pH =Submit AnswerTries 0/994. What volume, in mL of 0.423 M HCI needs to be added to 455.8 mL of 0.810 M NaHCO2 to achieve a solution with a pH of 3.15.Note: the pKh of NaHCO, is 10.25, you may assume the 5% approximation holds, and you may assume that the volumes are additive.INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units.mL

Given: Concentration of HCN = 0.0415 M Volume of HCN solution = 278.9 mL = 0.2789 L…

1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 ml of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pk, of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrmil Answer Tries 0/99

1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 ml of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pk, of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrmil Answer Tries 0/99

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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