Asked by Trisan

How much wat must be evaporated from a 65-gallon tank of 40% salt solution in order to obtain an 80% salt solution?
Answered by Vipster

C1 V1 = C2 V2

0.4 x 65 = 0.8 x V2

V2 = 65/2 = 32.5 gallons

amount that must evaporate = 65-32.5
= 32.5

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