Some calorimeters measure percentage transmittance (%T) only. If a solution has

Question

Some calorimeters measure percentage transmittance (%T) only. If a solution has a %T of 73.5%, then what is the value of absorbance? If a solution has an absorbance of 0.3333, then what is the value of the T%?

Please help! Please show the calculations, too! THANK YOU SO MUCH!!! Some calorimeters measure percentage transmittance (%T) only. If a solution has a %T of 73.5%, then what is the value of absorbance? If a solution has an absorbance of 0.3333, then what is the value of the T%?

Please help! Please show the calculations, too! THANK YOU SO MUCH!!!

Please help! Please show the calculations, too! THANK YOU SO MUCH!!!

Explanation / Answer

We know that,

Absorbance, A = 2 - log10(%T)

%T = 73.5%

Putting in above equation

A = 2 - log10(73.5)

A = 2 - 1.866

A = 0.134

(ii). Absorbance, A = 0.3333

0.3333 = 2 - log10(%T)

log10(%T) = 1.6667

%T = 101.6667

%T = 46.42%

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