## (Solved) I'm not understanding any of this could someone help please

I?m not understanding any of this could someone help please

Plot the following data as absorbance versus[XX] as a calibration curve:

Absorbance

0.0453

0.097

0.14

0.35

0.51

Standard Concentration of XX

3.0 *10^-4 mol/L

6.2*10^-4 mol/L

9.0*10^-4 mol/L

2.2*10^-3 mol/L

3.2*10^-3 mol/L

A &quot;test&quot; solution showed a percent transmittance(%T) reading 55%T.Interpret the calibration

curve to determine the molar concentration of XX in the test solution.Please include a graph

model so I can plot the coordinates properly.

The plot that indicates the relation between the absorbance Vs concentration

x-Concnetration

y-absorbance

From the plot ?

y = 160.3x

Since ?

A = ? lc ( wherel =1 dm 3 )

When compared with the above equation, we get - ? = 160.3

Since ?

%transmittance = 55%

T = 0.55

Therefore ?

A = -log T = -log(0.55) = (160.3)[XX]

[XX] = 1.61*10^-3 M

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This question was answered on: Oct 15, 2019

Solution~000.zip (25.37 KB)

STATUS

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Oct 15, 2019

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