Chemistry Beer Lambert problem, where did I go wrong?

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The discussion revolves around a Beer-Lambert law calculation where the user arrives at a concentration of approximately 20mM but believes the correct answer is 2mM. The user provides their calculations, including the absorbance formula A = log(io/I) and the subsequent concentration formula. Other participants confirm that the calculations seem correct based on the provided information. The discrepancy in the final answer suggests a potential misunderstanding or misinterpretation of the original question. Clarification on the parameters used in the calculations may be necessary to resolve the issue.
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Homework Statement
Light intensity decreases by a factor of 100 when light passes through a 1cm cuvette with solution. Molar extinction coefficient is 105M-1cm-1. Find concentration.
Relevant Equations
A=ECL
A = log(io/I)
A=ECL
A = log(io/I)
A = log100/1 = 2

2/105M(1cm) = 0.019M ~ 20mM

Apparently the answer is 2mM, where did I go wrong?
 
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Your answer looks right to me, assuming you have copied the question correctly.
 

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