[Modified] A compound with molecular mass 427.35 g/mol was dissolved in a 5-mL volumetric flask. A 1.00-mL aliquot was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark. The absorbance at 340 nm was 0.431 in a 1.000-cm cuvet. The molar absorptivity at 340 nm is 340 = 6220 M-1-cm-1. (a) Calculate the concentration of compound in the cuvet. 4.0 6.93e-5 M (b) What was the concentration of compound in the 5-mL flask? 96.93e-4 M (c) How many milligrams of compound were used to make the 5-mL solution? 4.0 1.47 mg

[Modified] A compound with molecular mass 427.35 g/mol was dissolved in a 5-mL volumetric flask. A 1.00-mL aliquot was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark. The absorbance at 340 nm was 0.431 in a 1.000-cm cuvet. The molar absorptivity at 340 nm is 340 = 6220 M-1-cm-1. (a) Calculate the concentration of compound in the cuvet. 4.0 6.93e-5 M (b) What was the concentration of compound in the 5-mL flask? 96.93e-4 M (c) How many milligrams of compound were used to make the 5-mL solution? 4.0 1.47 mg

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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