Two streams flow into a 500-gallon tank. The first stream is 10.0 wt% ethanol and 90.0% hexane (the mixture density, 1, is 0.68 g/cm3 ) and the second is 90.0 wt% ethanol, 10.0% hexane 2 0:78 g/cm3. After the tank has been filled, which takes 22 min, an analysis of its contents determines that the mixture is 60.0 wt% ethanol, 40.0% hexane. You wish to estimate the density of the final mixture and the mass and volumetric flow rates of the two feed streams. (a) Draw and label a flowchart of the mixing process and do the degree-of-freedom analysis. (b) Perform the calculations and state what you assumed.
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