2,726.28 mL solution of propyl alcohol is required to make a 9.17% (v/v) aqueous solution in a 250. ml.
A solution's volume-by-volume percent concentration,
9.17% v/v is a measure of how many milliliters of solute it contains in 100 mL of solution.
In this case,
9.17% v/v solution will contain -
9.17 mL of solute for every 100 mL of solution.
This means that in order to have propyl alcohol required to make a 9.17% (v/v) aqueous solution in 250 ml of solute, you need to have
250 mL solute× 100 mL solution/ 9.17mL solute
=2,726.28 mL solution.
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