Answer to Question #256155 in General Chemistry for atenz

Question

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

Answer 1

Concentration =0.85 mM