SOLUTION: determine the number of milliliters of a 70% sulfuric acid solution that must be added to 160 milliliters of a 25% solution to make a 30% solution

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Question 990028: determine the number of milliliters of a 70% sulfuric acid solution that must be added to 160 milliliters of a 25% solution to make a 30% solution
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
determine the number of milliliters of a 70% sulfuric acid solution that must be added to 160 milliliters of a 25% solution to make a 30% solution
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Equation:
acid + acid = acid
0.25*160 + 0.70x = 0.30(160+x)
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25*160 + 70x = 30*160 + 30x
40x = 5*160
x = 20 ml (amt. of 70% solution to add)
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Cheers,
Stan H.
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