A mixture is 30.0 wt% toluene (C¬H8) and 70.0 wt% benzene (C6H6). What are the mole fractions of toluene and benzene in the mixture? Assume a basis of 100 grams for the total mixture. MW toluene: 92.1 MW benzene: 78.1 a) Define the mass basis. b) Calculate the mass of each species using the basis. c) Convert the masses to moles using molecular weight. d) Calculate total moles. e) Calculate mole fractions.

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