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

How many liters of 60% hydrochloric acid must be mixed with how many liters of 20% hydrochloric acid to make 670 liters of a 39% hydrochloric acid solution?


The number of liters of 60% hydrochloric acid needed is liters.
The number of liters of 20% hydrochloric acid needed is liters.