#40 & 42 A calibration curve for the determination of aspirin is constructed fromknown concentration aspirin solutions, mg/mL, and the HPLC peak area'sfor each standard. If the equation is y = 12.565x -0.71, what is theconcentration for an unknown that has a peak area of 195.2?O 8.9O 6.7O 14.1O 15.5O 17.7 The concentration and absorbance data below were collected for compound.X. A sample of compound X of unknown concentration has a correctedaverage absorbance of 0.451 (three replicate measurements). Calculate theconcentration of the unknown?ConcentrationAbsorbance(mg/mL)100.422150.510200.621O 9.710.9O 11.6O 8.8

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Chemistry

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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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Concept explainers

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

Question

#40 & 42

A calibration curve for the determination of aspirin is constructed from
known concentration aspirin solutions, mg/mL, and the HPLC peak area's
for each standard. If the equation is y = 12.565x -0.71, what is the
concentration for an unknown that has a peak area of 195.2?
O 8.9
O 6.7
O 14.1
O 15.5
O 17.7

The concentration and absorbance data below were collected for compound.
X. A sample of compound X of unknown concentration has a corrected
average absorbance of 0.451 (three replicate measurements). Calculate the
concentration of the unknown?
Concentration
Absorbance
(mg/mL)
10
0.422
15
0.510
20
0.621
O 9.7
10.9
O 11.6
O 8.8

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