2. Select the compound (C6H5NO2 or C6H5Br) with weaker intermolecular forces and calculate its enthalpy of vaporization and report your answer in kJ/mol. 3. Water in three phases (s,I,g) and at three different temperatures were add to a well-insulated container. (The quantities and temperatures are shown in the table at the right.) Heat moved between the quantities of water in the different phases, and the system came to thermal equilibrium with both H2O(s) and H2Oj inside. Calculate the mass of ice that remains after the system has come to thermal equilibration. 4. Examine the phase diagram and fill in the blanks for the phase or phases in each region or point on the diagram. 5. Nitrogen gas ( N2(1/1) was bubbled through CCl40 yielding a gaseous mixture that was saturated with CCl4ig). (Pvap (CCl4 at 50C)=301.3mmHg.) The 12.42 L sample nitrogen gas had a pressure of 755 mmHg and was at 50.0C before being bubble through the CCl400.. The gas mixture's temperature was kept at 50.0C and its total pressure was 755mmHg. Calculate the volume of the resulting gaseous mixture