(Concentration) You are tasked to prepare 62.5 ppm of a caffeine standard for an analysis. You need to prepare 50.00 (+0.04) mL of this solution. However, you only have 50.00mL volumetric flasks available and a previously prepared caffeine solution using 0.0250 (+0.0003) g dissolved in 50.00 (+0.04) mL of water. You can use a 25.0000 (+0.0003) mL volumetric pipette to dilute your original solution in half every time. How many dilutions are you supposed to make to reach your target concentration? Write your answer using the appropriate number of digits. Note that the formula mass of caffeine is 194.194 g/mol with negligible error. Number of times to make a dilution: times

(Concentration) You are tasked to prepare 62.5 ppm of a caffeine standard for an analysis. You need to prepare 50.00 (+0.04) mL of this solution. However, you only have 50.00mL volumetric flasks available and a previously prepared caffeine solution using 0.0250 (+0.0003) g dissolved in 50.00 (+0.04) mL of water. You can use a 25.0000 (+0.0003) mL volumetric pipette to dilute your original solution in half every time. How many dilutions are you supposed to make to reach your target concentration? Write your answer using the appropriate number of digits. Note that the formula mass of caffeine is 194.194 g/mol with negligible error. Number of times to make a dilution: times

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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