What dilution is necessary to make an 18 mg/L solution from a 30 mg/L solution?

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Quizplus · Accepted Answer

A useful technique to determine what dilution is needed when converting from one concentration to a lower concentration when given only the beginning and ending concentrations is to create a fraction of the concentration wanted over the concentration needed and reduce.(If you divide, this will not work!) In this case, 18/30 can be reduced to 3/5, thus the required dilution is a 3:5 dilution.

What Dilution Is Necessary to Make an 18 Mg/L Solution