test1s-1 - Chemistry 2740 Spring 2010 Test 1 Solutions 1....

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Chemistry 2740 Spring 2010 Test 1 Solutions 1. (a) Suppose that we have one reaction that, by itself, is not thermodynamically al- lowed. If we add a second reaction that removes one of the products of the first, and if the overall free energy change for the two reactions put together is nega- tive, then the first reaction can occur. We say in these cases that we have coupled reactions. (b) In indirect calorimetry, we measure gas exchange in a living organism, and perhaps also analyze urine. We use these measurements to estimate the energy used by the organism based on the known stoichiometry of oxygen used, carbon dioxide generated and urea generated in metabolizing different storage compounds (fat, carbohydrates, protein), and on the energy released in these metabolic processes. (c) A microstate (microscopic state) is an arrangement of the components of a system (including the energy stored in the molecules) that is consistent with a given macroscopic state. (d) Δ
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This note was uploaded on 03/03/2012 for the course CHEM 2740 taught by Professor Roussel during the Fall '07 term at Lethbridge College.

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test1s-1 - Chemistry 2740 Spring 2010 Test 1 Solutions 1....

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