CHEM 1110 Midterm: UT Chattanooga Chem 1110 1110exam1-fall2007key
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Instructions: there are 5 questions for a total of 100 points. Please make sure to present your solutions in a clear, logical, and legible manner. Indicate clearly any approximations or assumptions you make and provide your justification(s) for them. If you use scratch paper, remember to transfer answers to the exam; answers on scratch paper will not be considered. You are allowed use of only pen/pencil, equations handbook, and calculator: (15 points) the mean solar flux at the earth"s surface is about 2. 0 j cm-2 min-1. Using a non- focusing solar collector, the temperature of the device can reach 85. 0 celsius. A heat engine is operated using the collector as the hot reservoir and a cold reservoir at 298k. Assume the engine operates at the maximum carnot efficiency. 1: (20 points) the volume coefficient of expansion of mercury at 0 c is 18 x 10-5 ( c)-1. The coefficient of compressibility is 5. 32 x 10-6 bar-1.
