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Answer the following chemistry problem. Report the volume to the nearest milliliter of hydrochloric acid.

How many milliliters of 40% hydrochloric acid must be mixed with how many milliliters of 15% hydrochloric acid to make 780 milliliters of a 36% hydrochloric acid solution?


The number of milliliters of 40% hydrochloric acid needed is milliliters.
The number of milliliters of 15% hydrochloric acid needed is milliliters.