Absorptivity?

2.00 ml of the 0.0205 M soln of compound A was mixed with 23.0 ml of deionized water. The absorbance of the resulting soln was measured to be 0.364 in a 0.50 cm curvette at 514 nm. Find the molr absorptivity of compound A at 514 nm.

Answer:
Use the Beer-Lambert Law: Absorptivity = the molar absorptivity x path length of the cell x the molar concentration.

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