2021 September 07 Page 4 18. A chemist must mix 400 cubic centimeters of a 90% acid solution with some amount of a 55% acid solution to form a mixture which has a concentration of 80% acid.. How much of the 55% acid solution should she use?

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Q: = 8 = 10 11 F 12 F 13 = 14 = 15 = 16 = 17 F 18 19 A chemical company makes two brands of antifreeze.…

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Q: 14. Let tank X, initially has 100 gallons of brine made with 100 pounds of salt. Tank X2 initially…

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