In a Beer's Law study, a Beer's Law Graph for FeSCN2+ was done at 485 nm and is shown below.Beer's Law Plot of FeSCN2+0.900y = 0.1215x - 0.0023R2 = 0.99820.8000.7000.6000.5000.4000.3000.2000.1000.0000.0001.0002.0003.0004.0005.0006.0007.0008.000-0.100Concentration (ppm)If a unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration ofFESCN2+ in the unknown sample? (Note: ppm = parts per million)The concentration of the unknown sample isin units ofIf the path length of light is 13.5 mm (millimeters), the absorptivity coefficient, ɛ, for FESCN2* isin units of(Do not use superscripts, subscripts, or carets. Write 1.2 x 103 as 1.2x10-3 or 1.2e-3.)Absorbance at 485 nm

When a graph of absorbance and concentration is plotted, a straight line is obtained.

Answered: 0.900 y = 0.1215x - 0.0023 R2 = 0.9982…

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0.900 y = 0.1215x - 0.0023 R2 = 0.9982 0.800 0.700 0.600 0.500 0.400

Chemistry

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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

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

In a Beer's Law study, a Beer's Law Graph for FeSCN2+ was done at 485 nm and is shown below.
Beer's Law Plot of FeSCN2+
0.900
y = 0.1215x - 0.0023
R2 = 0.9982
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
0.000
1.000
2.000
3.000
4.000
5.000
6.000
7.000
8.000
-0.100
Concentration (ppm)
If a unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration of
FESCN2+ in the unknown sample? (Note: ppm = parts per million)
The concentration of the unknown sample is
in units of
If the path length of light is 13.5 mm (millimeters), the absorptivity coefficient, ɛ, for FESCN2* is
in units of
(Do not use superscripts, subscripts, or carets. Write 1.2 x 103 as 1.2x10-3 or 1.2e-3.)
Absorbance at 485 nm

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