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Extension Questions 1. A sample with an unknown concentration of Cr(NO3)3 has an absorbance of 0.68 at A of 426 nm. A calibration curve was produced for Cr(NO3)s and is shown below in Figure 1. Absorbance 0.5 4.63E-03*x + 4.4E-03 0.4 0.3 0.2 0.1 0 25 50 75 100 Concentration (mM) Figure 1. Calibration curve for Cr(NO) collected at 426 nm a. Determine the molar absorptivity (E) ifa 1.5 cm path length cuvette was used to collect data. Utilize the slope of the calibration curve above to determine the molar absorptivity value. b. Determine the concentration (mM) of Cr(NO3) in the unknown solution. n 9 c. A different lab group used a 1.0 cm path length cuvette in the preparation of a calibration curve using the same concentrations of Cr(NO3)3 space below, quantitatively draw out what the new calibration curve would look like. as in Figure 1. In the Include the axes labels and numerical values. Absorbance

Extension Questions 1. A sample with an unknown concentration of Cr(NO3)3 has an absorbance of 0.68 at A of 426 nm. A calibration curve was produced for Cr(NO3)s and is shown below in Figure 1. Absorbance 0.5 4.63E-03*x + 4.4E-03 0.4 0.3 0.2 0.1 0 25 50 75 100 Concentration (mM) Figure 1. Calibration curve for Cr(NO) collected at 426 nm a. Determine the molar absorptivity (E) ifa 1.5 cm path length cuvette was used to collect data. Utilize the slope of the calibration curve above to determine the molar absorptivity value. b. Determine the concentration (mM) of Cr(NO3) in the unknown solution. n 9 c. A different lab group used a 1.0 cm path length cuvette in the preparation of a calibration curve using the same concentrations of Cr(NO3)3 space below, quantitatively draw out what the new calibration curve would look like. as in Figure 1. In the Include the axes labels and numerical values. Absorbance

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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Please answer all the parts of the question that correspond to number 1 (a, b and c). Please show all work and explain all the steps.

 

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Extension Questions 1. A sample with an unknown concentration of Cr(NO3)3 has an absorbance of 0.68 at A of 426 nm. A calibration curve was produced for Cr(NO3)s and is shown below in Figure 1. Absorbance 0.5 4.63E-03*x + 4.4E-03 0.4 0.3 0.2 0.1 0 25 50 75 100 Concentration (mM) Figure 1. Calibration curve for Cr(NO) collected at 426 nm a. Determine the molar absorptivity (E) ifa 1.5 cm path length cuvette was used to collect data. Utilize the slope of the calibration curve above to determine the molar absorptivity value. b. Determine the concentration (mM) of Cr(NO3) in the unknown solution. n 9 c. A different lab group used a 1.0 cm path length cuvette in the preparation of a calibration curve using the same concentrations of Cr(NO3)3 space below, quantitatively draw out what the new calibration curve would look like. as in Figure 1. In the Include the axes labels and numerical values. Absorbance
Transcribed Image Text:Extension Questions 1. A sample with an unknown concentration of Cr(NO3)3 has an absorbance of 0.68 at A of 426 nm. A calibration curve was produced for Cr(NO3)s and is shown below in Figure 1. Absorbance 0.5 4.63E-03*x + 4.4E-03 0.4 0.3 0.2 0.1 0 25 50 75 100 Concentration (mM) Figure 1. Calibration curve for Cr(NO) collected at 426 nm a. Determine the molar absorptivity (E) ifa 1.5 cm path length cuvette was used to collect data. Utilize the slope of the calibration curve above to determine the molar absorptivity value. b. Determine the concentration (mM) of Cr(NO3) in the unknown solution. n 9 c. A different lab group used a 1.0 cm path length cuvette in the preparation of a calibration curve using the same concentrations of Cr(NO3)3 space below, quantitatively draw out what the new calibration curve would look like. as in Figure 1. In the Include the axes labels and numerical values. Absorbance
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