Which measure of concentration is best used when working with small concentrations?

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Which measure of concentration is best used when working with small concentrations?

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Answer 1 · 2016-07-09T19:40:42

Perhaps $ppm$ $"ppm"$ , $parts per million$ $"parts per million"$ ?

Explanation:

$1 ppm$ $"1 ppm"$ in aqueous solution $=$ $=$ $1 \cdot m g \cdot solute per litre of solution$ $1*mg*"solute per litre of solution"$ . At these concentrations, we really do not have to bother about considerations of density.

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Which measure of concentration is best used when working with small concentrations?

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