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OpenStudy (anonymous):
A chemist has one solution that is 80% acid and another solution that is 30% acid. How much of the first (80%) solution is needed to make a 400 L solution that is 62% acid? @ßαbчღ
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OpenStudy (anonymous):
Didn't I just do this one ?
OpenStudy (anonymous):
look at the 80% insade the prenthasses
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