The vapor pressure of benzene is 100.0 Torr at 26 C. A nonvolatile compound was added to

Question:

The vapor pressure of benzene is 100.0 Torr at 26 °C. A nonvolatile compound was added to 0.400 mol C₆H₆(l) at 26°C and the vapor pressure of the benzene in the solution decreased to 68.0 Torr. What amount (in moles) of solute molecules was added to the benzene?

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