Mathematics, 06.07.2019 23:30 QuestionAsker4356

6. solve: a chemist needs 30 ounces of 50% hydrochloric acid solution. in her lab, she has some 80% hydrochloric acid solution, some 60% hydrochloric acid solution, and some 40% hydrochloric acid solution. she must use 2 ounces of the 80% solution. how many ounces each of the 40% and 60% solutions must be mixed with the 2 ounces of 80% to obtain the 30 ounces of 50% hydrochloric acid solution she needs?

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6. solve: a chemist needs 30 ounces of 50% hydrochloric acid solution. in her lab, she has some 80%...