Waiting for your answers to the problem below. Answer the following chemistry problem. Report the volume to the nearest gallon of nitric acid. How many gallons of 60% nitric acid must be mixed with how many gallons of 25% nitric acid to make 690 gallons of a 36% nitric acid solution? The number of gallons of 60% nitric needed is gallons. The number of gallons of 25% nitric needed is gallons.