SOLUTION: a lab technician needs to mix a 45% phosphorus solution with an 18% phosphorus solution to obtain 12 milliliters of a 36% phosphorus solution. how many milliliters of the 18% phosp
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Question 954363: a lab technician needs to mix a 45% phosphorus solution with an 18% phosphorus solution to obtain 12 milliliters of a 36% phosphorus solution. how many milliliters of the 18% phosphorus solution will the lab technician need? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ml of 45% solution needed = ml of phosphorus in 45% solution
Let = ml of 18% solution needed = ml of phosphorus in 18% solution
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(1)
(2)
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(2)
(2)
(2)
Divide both sides by
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)
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and
(1)
(1)
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4 ml of the 18% solution are needed
check:
(2)
(2)
(2)
(2)
(2)
OK
