Question 995979: How much pure acid should be mixed with 55 gallons of aa 40 %40% acid solution in order to get 50% acid solution? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = gallons of pure acid to be added gallons of pure acid in 40% solution
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11 gallons of pure acid needs to be added
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check:
OK