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florzak florzak
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11 years ago
How do you calculate molarity from absorbance and molar extinction coefficient?
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wrote...
Valued Member
2 years ago
beer's law, A=ebc

A is absorbance

e is the extinction coefficient

b is the path length of the sample (this is given or known from the experiment, it's the size of the cell which your sample is contained)

c is the concentration in mol/L

solve for c and you get A/eb=c just plug in the numbers and you have your answer
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