SOLUTION: Doreen Schmidt is a chemist. She needs to prepare 36 ounces of a 17% hydrochloric acid solution. Find the amount of 18% solution and the amount of 9% solution she should mix to get

Question 1032467: Doreen Schmidt is a chemist. She needs to prepare 36 ounces of a 17% hydrochloric acid solution. Find the amount of 18% solution and the amount of 9% solution she should mix to get this solution.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Doreen Schmidt is a chemist. She needs to prepare 36 ounces of a 17% hydrochloric acid solution. Find the amount of 18% solution and the amount of 9% solution she should mix to get this solution.
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Quantity Eq: e + n = 36 oz
Acid Eq:: 18e + 9n = 17*36
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Modify for elimination:
e + n = 36
2e +n = 17*4
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Subtract and solve for "e":
e = 32 oz (amt. of 18% needed)
n = 36-32 = 4 oz (amt. of 9% needed)
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Cheers,
Stan H.
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