1. The document contains a chemistry exam with 4 problems. It provides the questions, solutions, and relevant data for calculating thermodynamic properties like heat, work, entropy, and heat of reaction. 2. The first problem calculates the heat of combustion of ethanol from bomb calorimetry data on ethane and ethanol. 3. The second problem calculates heat, work, and entropy changes for an ideal diatomic gas undergoing cyclic reversible processes. 4. The third problem calculates heat and entropy changes for the phase change of 10 moles of a metal from solid to liquid. 5. The fourth problem calculates the final temperature and entropy change when ice at -15°C is added to water at 35°