/ 80% water with a formic acid sodium formate buffer @ pH 3.4) You have a diluted STUDENT STOCK solution that contains 0.01g of caffeine in 100mL of mobile phase solvent mixture. You are asked to prepare 3 diluted concentrations: 1. 15 mL of student stock in 25 mL of mobile phase solvent. 2. 10 mL of student stock in 25 mL of mobile phase solvent. 3. 5 mL of student stock in 25 mL of mobile phase solvent. Calculate the concentration of caffeine (in mg/mL) for each dilution.
/ 80% water with a formic acid sodium formate buffer @ pH 3.4) You have a diluted STUDENT STOCK solution that contains 0.01g of caffeine in 100mL of mobile phase solvent mixture. You are asked to prepare 3 diluted concentrations: 1. 15 mL of student stock in 25 mL of mobile phase solvent. 2. 10 mL of student stock in 25 mL of mobile phase solvent. 3. 5 mL of student stock in 25 mL of mobile phase solvent. Calculate the concentration of caffeine (in mg/mL) for each dilution.
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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You have a MASTER STOCK solution containing 1.000g of caffeine in 100mL of mobile phase solvent mixture (20% methanol / 80% water with a formic acid sodium formate buffer @ pH 3.4)
You have a diluted STUDENT STOCK solution that contains 0.01g of caffeine in 100mL of mobile phase solvent mixture.
You are asked to prepare 3 diluted concentrations:
1. 15 mL of student stock in 25 mL of mobile phase solvent.
2. 10 mL of student stock in 25 mL of mobile phase solvent.
3. 5 mL of student stock in 25 mL of mobile phase solvent.
Calculate the concentration of caffeine (in mg/mL) for each dilution.
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