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1. If the feed is 0.50 mole fraction n-hexane, 100kmol/h, with 70% vapor, what are the compositions, flowrates, and temperatures of the liquid and vapor products? 2. If the feed is 0.50 mole fraction n-hexane, 100kmol/h, and the vapor mole fraction is 0.65, what are the liquid mole fraction and the liquid and vapor flowrates and temperatures? 3. If the liquid is 0.30 mole fraction at 100kmol/h and the fraction remaining liquid is 30%, what are the feed and vapor flowrates, compositions, and temperatures