Question 2. Experiment: Spectrophotometric determination of Mn and Crin a mixture a. The slopes of the calibration curves (L.mg".qm) for Mn and Cr in a sample were measured with pure samples (standards) using a Spectronic-20 in a l-cm cell are given in the following table. Cr Mn Slope, 40 nm 16400 13870 Slope, 545 3990 6420 A mixture (unknown sample) of Cr and Mn in cm cell had an absorbance of 0.957 at 440- and 0.559 at 545-nm. Find the concentrations of Mn.end Cr in the unknown sample. A uno EBC+Ebcmnnuu

Question 2. Experiment: Spectrophotometric determination of Mn and Crin a mixture a. The slopes of the calibration curves (L.mg".qm) for Mn and Cr in a sample were measured with pure samples (standards) using a Spectronic-20 in a l-cm cell are given in the following table. Cr Mn Slope, 40 nm 16400 13870 Slope, 545 3990 6420 A mixture (unknown sample) of Cr and Mn in cm cell had an absorbance of 0.957 at 440- and 0.559 at 545-nm. Find the concentrations of Mn.end Cr in the unknown sample. A uno EBC+Ebcmnnuu

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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