# Question #33839

Jun 22, 2017

Take $1 \cdot m L$ volume of the undiluted sample.........

#### Explanation:

Take $1 \cdot m L$ volume of the undiluted sample.........and place this is a $10 \cdot m L$ volumetric flask........make up to volume....this concentration is $\frac{1}{10}$ of the original concentration.......

Take $1 \cdot m L$ volume of the FORMER sample.........and place this is a $10 \cdot m L$ volumetric flask........make up to volume....this concentration is $\frac{1}{100}$ of the original concentration.......

Take $1 \cdot m L$ volume of the FORMER sample.........and place this is a $10 \cdot m L$ volumetric flask........make up to volume....this concentration is $\frac{1}{1000}$ of the original concentration.......

i.e. $\frac{1}{10} \times \frac{1}{10} \times \frac{1}{10} = \frac{1}{1000}$

Of course, I might have a $1 \cdot L$ volumetric flask; and thus I could take a $1 \cdot m L$ volume of the original solution, and dilute this to $1000 \cdot m L$.