You are designing a chemical process that involves a relatively unstudied compound, and you need to know Δ H^vap, ΔU^vap and ΔS^vap, and C_P* for the compound at atmospheric pressure. You place 1 mole of the compound (in the liquid state) in a piston cylinder device and heat it very slowly while maintaining the pressure at 1 atm. You can’t actually see what’s going on inside the cylinder, but you can monitor the heat addition, temperature, and volume. Initially, the temperature increases steadily while the volume increases very little. At a temperature of T = 97°F, the volume of the cylinder is 89 cm³. At T = 97.2°F, the temperature levels off, and the volume begins to expand more rapidly. 89 kJ of heat are added between the time the temperature levels off and the time the temperature begins to increase again. Unfortunately, you don’t have an accurate recording of the volume at the exact time the temperature started increasing. An additional 1.3 kJ of heat are added during the time the temperature climbs from 97.2°F to 100°F, at which time you stop the experiment. Give your best estimates of ΔH^vap, ΔU^vap, and ΔS^vap and C_P*.