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7. A student prepares two standard solutions of a food dye. The absorbances at 490 nm are recorded and shown in the table below. A food dye solution of unknown concentration has an absorbance of 0.55 units. a) Based on the data available what is the concentration of red food dye in the unknown? b) what are the two major problems with standards making up the Beer's law plot? Red Food Dye Concentration Absorbance 1.00 ppm 0.22 5.00 ppm 0.45

7. A student prepares two standard solutions of a food dye. The absorbances at 490 nm are recorded and shown in the table below. A food dye solution of unknown concentration has an absorbance of 0.55 units. a) Based on the data available what is the concentration of red food dye in the unknown? b) what are the two major problems with standards making up the Beer's law plot? Red Food Dye Concentration Absorbance 1.00 ppm 0.22 5.00 ppm 0.45

Chemistry
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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7. A student prepares two standard solutions of a food dye. The absorbances at 490 nm are recorded and shown in the table below. A food dye solution of unknown concentration has an absorbance of 0.55 units. a) Based on the data available what is the concentration of red food dye in the unknown? b) what are the two major problems with standards making up the Beer's law plot? Red Food Dye Concentration Absorbance 1.00 ppm 0.22 5.00 ppm 0.45 8. Briefly describe how you would make up a 25 mlL of a 5.7 ppm of a blue food dye solution?
Transcribed Image Text:7. A student prepares two standard solutions of a food dye. The absorbances at 490 nm are recorded and shown in the table below. A food dye solution of unknown concentration has an absorbance of 0.55 units. a) Based on the data available what is the concentration of red food dye in the unknown? b) what are the two major problems with standards making up the Beer's law plot? Red Food Dye Concentration Absorbance 1.00 ppm 0.22 5.00 ppm 0.45 8. Briefly describe how you would make up a 25 mlL of a 5.7 ppm of a blue food dye solution?
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