Mathematics, 03.10.2021 23:50 GreenHerbz206

You need 250 mL of a 90% alcohol solution. On hand, you have a 75% alcohol mixture. How much of the 75% alcohol mixture and pure alcohol will you need to obtain the desired solution?

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You need 250 mL of a 90% alcohol solution. On hand, you have a 75% alcohol mixture. How much of the...