Question #256156

A chemical dye absorbs light with wavelength 578 nm.

Using a standard solution of concentration 0.7 mM, the absorption is measured

to be 0.3 units. The absorption for a solution of unknown concentration is then

measured and found to be 0.1 units. What is the concentration? Give the answer to

at least 3 significant figures


Expert's answer

Concentration =0.85mM


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