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Mathematics, 27.04.2021 23:40 LilLappyLOL
A chemist has 10 ml of a solution which contains a 30% concentration of acid. How many ml of pure acid (that is, 100% acid) must be added in order to increase the concentration to 50%?
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A chemist has 10 ml of a solution which contains a 30% concentration of acid. How many ml of pure ac...
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