(c) The chromium concentration in an aqueous sample was determined by pipetting 10.0 cm³ of the unknown into each of five 50 cm³ volumetric flasks. Various volumes of a standard solution containing 5 ppm chromium were added to the flasks following which the solutions were diluted to 50 cm³. Using the data in the table below, plot an appropriate graph and calculate the chromium concentration in the unknown solution. Standard/ cm³ Unknown/cm³ 10 10 10 10 10 0 10 20 30 40 Absorbance 0.201 0.292 0.378 0.467 0.554

(c) The chromium concentration in an aqueous sample was determined by pipetting 10.0 cm³ of the unknown into each of five 50 cm³ volumetric flasks. Various volumes of a standard solution containing 5 ppm chromium were added to the flasks following which the solutions were diluted to 50 cm³. Using the data in the table below, plot an appropriate graph and calculate the chromium concentration in the unknown solution. Standard/ cm³ Unknown/cm³ 10 10 10 10 10 0 10 20 30 40 Absorbance 0.201 0.292 0.378 0.467 0.554

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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