PROBLEM 2 Layer Component Mass fraction Furfural 0.88 When pure furfural (solvent) is added to a mixture containing 0.2 mass fraction diphenylhexane and 0.8 mass fraction docosane, two separate layers can be obtained. If the composition of the two layers are as shown in the table, how much solvent was added to 500 kg of solution of docosane and diphenylhexane? Upper layer Diphenylhexane 0.101 Docosane 0.019 Furfural 0.004 Lower layer Diphenylhexane 0.104 Docosane 0.892

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