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If a solution has an absorbance value of 0.518 at a wavelength of 450 nm, what...

If a solution has an absorbance value of 0.518 at a wavelength of 450 nm, what is the percent transmittance of this solution at this wavelength?

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Answer #1

use:

Absorbance = 2 – log(%T)

0.518 = 2 – log(%T)

log(%T) =2-0.518

log(%T) =1.482

%T = 10^1.482

= 30.3389

Answer: 30.3389 %

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