SOLUTION: The chemistry lab keeps two acid solutions. One is 20% acid solutin and the other 35% acid solution. How much 20% and 35% acid solution should be used to prepare 25 liters of a 26%

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Question 348666: The chemistry lab keeps two acid solutions. One is 20% acid solutin and the other 35% acid solution. How much 20% and 35% acid solution should be used to prepare 25 liters of a 26% acid solution?
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Let be the amount of 20% acid solution.
Let be the amount of 35% acid solution.
Volume:
1.
Concentration:

2.
Multiply eq. 1 by 4 and subtract from eq. 2,


liters
From eq. 1,

liters

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