SOLUTION: a pharmacist wants to make 40 ml of a 76% hydrogen peroxide solution how many mls of 55% hydrogen peroxide must he mix with 85% hydrogen peroxide to make a desire solution
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Question 774046: a pharmacist wants to make 40 ml of a 76% hydrogen peroxide solution how many mls of 55% hydrogen peroxide must he mix with 85% hydrogen peroxide to make a desire solution Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ml of 55% solution needed
Let = ml of 85% solution needed
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(1)
(2)
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(2)
(2)
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
and
(1)
(1)
12 ml of 55% solution are needed
28 ml of 85% solution are needed
check:
(2)
(2)
(2)
(2)
(2)
OK
