SOLUTION: You need 75 mL of a 5% alcohol solution. On hand, you have a 25% alcohol mixture. How much of the 25% alcohol mixture and pure water will you need to obtain the desired solution?

Question 1054028: You need 75 mL of a 5% alcohol solution. On hand, you have a 25% alcohol mixture. How much of the 25% alcohol mixture and pure water will you need to obtain the desired solution?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of water needed
Let = ml of 25% alcohol solution needed
ml of alcohol in
your final solution
---------------------------------
(1)
(2)
---------------------------------
(2)
(2)
and
(1)
(1)
(1)
(1)
(1)
You need 15 ml of 25% solution
and 60 ml of pure water
------------------------------
check:

OK

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