Absorbance at 580 nm Cunce 1.00 ppm 0.030 2.50 ppm 0.072 5.00 ppm 0.147 7.50 ppm 0.217 10.00 ppm 0.301 15.00 ppm 0.442 20.00 ppm 0.577 0.738 25.00 ppm unknown 0.356 Plot the data on linear graph paper and fit a straight line to the points. Find the slope, intercept, and of the calibration curve. Construct a calibration curve. Determine the concentration of iron in the sample and its standard deviation from the least-squares equation of the line. Compare the unknown concentration to that obtained manually from a calibration curve.

Absorbance at 580 nm Cunce 1.00 ppm 0.030 2.50 ppm 0.072 5.00 ppm 0.147 7.50 ppm 0.217 10.00 ppm 0.301 15.00 ppm 0.442 20.00 ppm 0.577 0.738 25.00 ppm unknown 0.356 Plot the data on linear graph paper and fit a straight line to the points. Find the slope, intercept, and of the calibration curve. Construct a calibration curve. Determine the concentration of iron in the sample and its standard deviation from the least-squares equation of the line. Compare the unknown concentration to that obtained manually from a calibration curve.

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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