<PRE><B>Question 942816</B>
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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Equation:
acid + acid = acid
0.09x + 0*65 = 0.0026(x+65)
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Multiply thru by 10,000 to get:
900x = 26x + 26*65
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874x = 26*65
x = 1.934 gallons (amt of 9% to add)
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Cheers,
Stan H.
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