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

How many liters of 60% sulfuric acid must be mixed with how many liters of 35% sulfuric acid to make 630 liters of a 39% sulfuric acid solution?

The number of liters of 60% sulfuric acid needed is liters.

The number of liters of 35% sulfuric acid needed is liters.