For the experiment this week, you'll use the relationship between FeSCN2+ absorbance andconcentration. Suppose you find that the FeSCN2+ has the following calibration curve.AbsorbanceAbsorbance vs. Concentration ofFe(SCN)²+0.80.60.40.200.00000 0.00005 0.00010 0.00015 0.00020[Fe(SCN)²+] (M)Suppose you measure the absorbance of an unknown FeSCN2+ solution and find its absorbance to be0.552. What is the molar concentration of FeSCN2* in the unknown solution? Hint: if you're not surehow to solve this, watch the videos on the Pre-Lab Watch: Concept Videos page.0.577 MO 0.528 My=3707.5x -0.0245R² = 0.99890.000142 MO 0.000155 M

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For the experiment this week, you'll use the relationship between FeSCN2* absorbance and concentration. Suppose you find that the FeSCN2+ has the following calibration curve. Absorbance Absorbance vs. Concentration of Fe(SCN)²+ 0.8 0.6 0.4 0.2 0 0.00000 0.00005 0.00010 0.00015 0.00020 [Fe(SCN)2+] (M) Suppose you measure the absorbance of an unknown FeSCN2+ solution and find its absorbance to be 0.552. What is the molar concentration of FeSCN2* in the unknown solution? Hint: if you're not sure how to solve this, watch the videos on the Pre-Lab Watch: Concept Videos page. O 0.577 M O 0.528 M O 0.000142 M y=3707.5x-0.0245 R²=0.9989 0.000155 M

For the experiment this week, you'll use the relationship between FeSCN2* absorbance and concentration. Suppose you find that the FeSCN2+ has the following calibration curve. Absorbance Absorbance vs. Concentration of Fe(SCN)²+ 0.8 0.6 0.4 0.2 0 0.00000 0.00005 0.00010 0.00015 0.00020 [Fe(SCN)2+] (M) Suppose you measure the absorbance of an unknown FeSCN2+ solution and find its absorbance to be 0.552. What is the molar concentration of FeSCN2* in the unknown solution? Hint: if you're not sure how to solve this, watch the videos on the Pre-Lab Watch: Concept Videos page. O 0.577 M O 0.528 M O 0.000142 M y=3707.5x-0.0245 R²=0.9989 0.000155 M

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

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

For the experiment this week, you'll use the relationship between FeSCN2+ absorbance and
concentration. Suppose you find that the FeSCN2+ has the following calibration curve.
Absorbance
Absorbance vs. Concentration of
Fe(SCN)²+
0.8
0.6
0.4
0.2
0
0.00000 0.00005 0.00010 0.00015 0.00020
[Fe(SCN)²+] (M)
Suppose you measure the absorbance of an unknown FeSCN2+ solution and find its absorbance to be
0.552. What is the molar concentration of FeSCN2* in the unknown solution? Hint: if you're not sure
how to solve this, watch the videos on the Pre-Lab Watch: Concept Videos page.
0.577 M
O 0.528 M
y=3707.5x -0.0245
R² = 0.9989
0.000142 M
O 0.000155 M

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