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how many liters of water should be added to a 20 liters of 40% acid solution to obtain a 30% acid solution?
11 years ago

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Steve
since water is 0% acid,

.40(20) + 0x = .30(20+x)
Now just solve for x

Or, since you want 3/4 the concentration, the final volume must be 4/3 the starting volume.
11 years ago

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