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Use the diagram below to answer the following questions. What phases can be present at 200°C and 0.75 atm pressure?

Mercury rises in a glass tube faster than water.True False

Only molecules which do not have dipole moments can experience dispersion forces. True False

Acetone (CH3-CO-CH3) will be miscible with chloroform (CHCl3) and the strongest intermolecular forces between the solute and the solvent will be dipole-dipole forces.True False

which of the following substances will have the greatest polarizability (higher dispersion forces)?

Stainless steel which is an alloy is an example of a ________ solution.

How many moles of ions (particles) are present in 1.0 L of 0.5 M Li2SO4 (lithium sulfate)?

The following partial phase diagram shows a close-up view of the vapor pressure curves (liquid-vapor equilibrium curve) for a pure solvent and a solution containing a nonvolatile solute dissolved in this solvent. Which curve is the solvent and what happens to the boiling point when the solute is dissolved in the solvent?

The enthalpy of vaporization for ethanol is 39.3 kJ/mol.  The vapor pressue for ethanol at 34.9 oC is 100 mmHg.  What is the normal boiling point of ethanol if the atmospheric pressure is 740 mm Hg.  Show your work to receive credit. You can use the Clausius-Clayperon 2-point equation:

Which best indicates the direction of the dipole moment in formaldehyde, H2C=O?