"professor offenrokker has a solution that is 6.0 x 10-3 m of hcl of a solution. however, he needs 450 ml of a 6.0 x 10-4 m hcl solution. how much of the stock solution will he need to make the dilute solution? "

Answer : The volume of the stock solution he need to make the dilute solution will be, 45 mL

Explanation :

According to dilution dilution law:

where,

= molarity of concentrated solution

= molarity of dilute solution

= volume of concentrated solution

= volume of dilute solution

Given:

=

=

= ?

= 450 mL

Now put all the given values in the above formula, we get:

Therefore, the volume of the stock solution he need to make the dilute solution will be, 45 mL

the answer is symmetrical : )