You are measuring the isooctane concentration in a hydrocarbon mixture with a chromatographic method. The table shows the standard concentrations and their measured values obtained for the calibration curve. You follow to analyze the sample four times and the mean peak area obtained was 2.65. What is the isooctane concentration (mole %) standard deviation in that sample after applying the method of least-squares? (Sxx = 1.14537; Syy = 5.07748; Sxy=2.39669) Isooctane concentration, mole % 0.352 0.803 1.08 1.38 1.75 Peak Area 1.09 1.78 2.60 3.03 4.01

You are measuring the isooctane concentration in a hydrocarbon mixture with a chromatographic method. The table shows the standard concentrations and their measured values obtained for the calibration curve. You follow to analyze the sample four times and the mean peak area obtained was 2.65. What is the isooctane concentration (mole %) standard deviation in that sample after applying the method of least-squares? (Sxx = 1.14537; Syy = 5.07748; Sxy=2.39669) Isooctane concentration, mole % 0.352 0.803 1.08 1.38 1.75 Peak Area 1.09 1.78 2.60 3.03 4.01

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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