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[" A solution has a "1:4" mole ratio of pentane "],[" to hexane.The vapour pressures of the "],[" pure hydrocarbons at "20^(@)C" are "440mm" Hg "],[" for pentane and "120mm" Hg for hexane."],[" The mole fraction of pentane in the vapour "],[" phase would be "],[[" (a) "0.200," (b) "0.549],[" (c) "0.786," (d) "0.478]],[" A calle."]

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