jacobsplashmaster jacobsplashmaster

12-03-2017
Mathematics

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A chemist needs a 70% solution of tannic acid. How much distilled water must he add to 5 gallons of a 90% solution of acid to obtain the 70% solution?

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Аноним Аноним

13-03-2017

He/she should add 1.43 gallons of distilled water.

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