Question

Question #33839

Answer 1

Take `1*mL` volume of the undiluted sample.........

Explanation:

Take `1*mL` volume of the undiluted sample.........and place this is a `10*mL` volumetric flask........make up to volume....this concentration is `1/10` of the original concentration.......

Take `1*mL` volume of the FORMER sample.........and place this is a `10*mL` volumetric flask........make up to volume....this concentration is `1/100` of the original concentration.......

Take `1*mL` volume of the FORMER sample.........and place this is a `10*mL` volumetric flask........make up to volume....this concentration is `1/1000` of the original concentration.......

i.e. `1/10xx1/10xx1/10=1/1000`

Of course, I might have a `1*L` volumetric flask; and thus I could take a `1*mL` volume of the original solution, and dilute this to `1000*mL`.