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When measuring iron in river water by spectrophotometry using the ferrozine reaction that is described in the class notes, a student finds that they cannot distinguish their samples from noise (i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes the 3. decision to use a 5-cm cuvette in their method instead. a) By how much should the student expect their sample measurements to increase by? Why? b) Will their reagent blank also increase by the same amount? Why or why not?

When measuring iron in river water by spectrophotometry using the ferrozine reaction that is described in the class notes, a student finds that they cannot distinguish their samples from noise (i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes the 3. decision to use a 5-cm cuvette in their method instead. a) By how much should the student expect their sample measurements to increase by? Why? b) Will their reagent blank also increase by the same amount? Why or why not?

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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When measuring iron in river water by spectrophotometry using the ferrozine reaction that is described in the class notes, a student finds that they cannot distinguish their samples from noise (i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes the decision to use a 5-cm cuvette in their method instead. a) By how much should the student expect their sample measurements to increase by? Why? b) Will their reagent blank also increase by the same amount? Why or why not? 3.
Transcribed Image Text:When measuring iron in river water by spectrophotometry using the ferrozine reaction that is described in the class notes, a student finds that they cannot distinguish their samples from noise (i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes the decision to use a 5-cm cuvette in their method instead. a) By how much should the student expect their sample measurements to increase by? Why? b) Will their reagent blank also increase by the same amount? Why or why not? 3.
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