How Do You Calculate the Percentage Transmission Using the Beer-Lambert Law?

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To calculate percentage transmission using the Beer-Lambert Law, first determine the absorption by multiplying the concentration (2.0 mol m-3) by the absorptivity (25 m2 mol-1) and the path length (0.02 m). This results in an absorption value that can be used in the Beer-Lambert equation, which relates absorption to transmission. The formula for percentage transmission is then derived from the absorption value. Understanding these calculations can simplify the process of determining percentage transmission at a specific wavelength.
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An aqueous solution of yeast nucleic acid of length 2.0*10^-2m and concerntrated 2.0mol m-3 has an absorptivity of 25m2 mol-1 at a certain wavelenght. calculate the percentages tranmission at this wavelenght.

this is an example that i don't understant, please help me to simplify it and explain it more for me. you can send me as many example as possible.

thank you for your kind attention.
 
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You can multiply concentration and absorptivity to get the absorption per length. This can be used in the Beer-Lambert law.
 

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