This seven question take-home exam guides the students through a marathon problem to arrive at a single answer to the overall question: "How sensitive a probe do you need in order to detect signs of "life" (methane produced by bacteria instead of by chemical equilibrium) on Mars". This exam was originally written to correspond to chapters four through seven in Ira Levine's Physical Chemistry, 3rd edition, McGraw Hill, New York, 1988.
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