.A solution contains 40.0 g of heptane (C7H16 MM = 100.2 g/mol) and 60.0 g of octane (C8H18, MM = 114.2 g/mol). The vapour pressures of pure heptane and pure octane at 25C are 61.1 mbar and 14.5 mbar, respectively.

Calculate the total vapor pressure above the solution at 25C.

What is/are the dominant intermolecular forces between the solution of heptane and octane?

When ammonium iodide (NH4I) is dissolved in water, the solution becomes colder. What does this tell us about relative enthalpies of Hsolute versus Hhydration

What is/are the dominant intermolecular forces between the solvent and solute in part c)?