Question 942816
I have 65 gallons of H2O, 35 gallons of 9% sulfuric acid.
How much of the sulfuric mix do I have to add to the H2O to get a 0.26% concentration 
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Add S gallons.
65*0 + S*9 = (65 + S)*0.26
9S = 0.26S + 16.9
1.9336 gallons