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absorbance A 0.070 M solution has an absorbance of A = 0.689. If a 1.00 cm pathlength was used, calculate the molar absorptivity constant () for this solution. Be sure to include the units!

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When we are looking at absorbances of solutions, we use a formula known as Beer's law (see links below).  This shows a linear relationship between the concentration of a solution and the absorbance (i.e. how much light was absorbed by a sample.  There are limitations to the law but it gives very good...

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