Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture containing 2.00 mgMn/ml and 2.50 mg Fe/ml gave a quotient (Fe signal/Mn signal) = 1.05/1.00. A mixture with a volume of 6.00 mL was%3Dprepared by mixing 5.00 ml of unknown Fe solution with 1.00 mL containing 13.5 mg Mn/ml. The absorbance of thismixture at the Mn wavelength was 0.128, and the absorbance at the Fe wavelength was 0.185. Find the molarity of theunknown solution.

The molarity of Fe in the unknown solution is to be determined using data provided for atomic…

Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture containing 2.00 mg Mn/ml and 2.50 mg Fe/ml gave a quotient (Fe signal/Mn signal) = 1.05/1.00. A mixture with a volume of 6.00 mL was prepared by mixing 5.00 ml of unknown Fe solution with 1.00 mL containing 13.5 mg Mn/ml. The absorbance of this mixture at the Mn wavelength was 0.128, and the absorbance at the Fe wavelength was 0.185. Find the molarity of the %3D unknown solution.

Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture containing 2.00 mg Mn/ml and 2.50 mg Fe/ml gave a quotient (Fe signal/Mn signal) = 1.05/1.00. A mixture with a volume of 6.00 mL was prepared by mixing 5.00 ml of unknown Fe solution with 1.00 mL containing 13.5 mg Mn/ml. The absorbance of this mixture at the Mn wavelength was 0.128, and the absorbance at the Fe wavelength was 0.185. Find the molarity of the %3D unknown solution.

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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Question

100%

Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture containing 2.00 mg
Mn/ml and 2.50 mg Fe/ml gave a quotient (Fe signal/Mn signal) = 1.05/1.00. A mixture with a volume of 6.00 mL was
%3D
prepared by mixing 5.00 ml of unknown Fe solution with 1.00 mL containing 13.5 mg Mn/ml. The absorbance of this
mixture at the Mn wavelength was 0.128, and the absorbance at the Fe wavelength was 0.185. Find the molarity of the
unknown solution.

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