a. Starting with a 1M stock of NaCl, a researcher prepares a 100 mM working solution. The dilution factor is: b. To prepare 50 ml of a 100 mM solution of NaCl, starting from a 1M stock of NaCl, a researcher should add ____ (volume with units) of the 1M stock to ____ (volume with units) of dilutent.

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A:

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A: A)

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