1. What are the units of ppm in a mass/mass ratio? What about in a mass/volume ratio? 2. What are the units of ppb in a mass/mass ratio? What about in a mass/volume ratio?
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Parts per million (ppm) is a unit of concentration that represents the number of parts of a substance per million parts of a mixture. In a mass/mass ratio, ppm is expressed as milligrams of solute per kilogram of solution. In a mass/volume ratio, ppm is expressed Show more…
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