Answer :

Food coloring diffuses quickly in water.

Transfer a small amount of the well-mixed solution to a new container and add water or another solvent to dilute the original solution. They use visible light absorption to determine the concentration and identify different dyes. If the concentration of the solution is unknown, the concentration can be determined by measuring the amount of light.

Absorbs specific wavelengths in a spectrophotometer. The purpose of the serial dilution method is to estimate the concentration of an unknown sample by counting the number of cultured colonies from serial dilutions of the sample and tracing the measured counts to the unknown concentration.

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