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If you perform a 1:4 dilution on a 20 mM NaCl stock, what is the final...

If you perform a 1:4 dilution on a 20 mM NaCl stock, what is the final concentration?

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Answer #1

1:4 dilution means 1 part of stock solution and 4 part of solvent so total volume will become 5 times of initial volume so concentration will become one fifth of initial concentration.

So the final concentration is 4 mM.

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