3. A 2.50×104M solution of a dye has an absorbance of 0.680 when measured in a 1.00 cm cell at 625 nm. Calculate the %Transmittance of the solution. Will the %Transmittance increase or decrease if the concentration of the dye is increased.

Q: I have to use beers law

A: Absorbance is calculated as follows,

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A: When the radiation is 50% absorbed and 50% transmitted,  %T = 50% A=-logT=-log(50100)=0.301

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