quiz3a - Exam Name MULTIPLE CHOICE Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following statements is FALSE. A) The difference in entropy between two states of a system is independent of the path between states. B) Entropy is a quantitative measure of disorder. C) Entropy can be measured in units of J/K D) The total entropy change in one cycle of a carnot engine is zero. E) The entropy of an isolated systen is conserved, i.e. constant. 1) 2) Does the entropy per cycle increase, decrease, or remain the same for the working substance of (a) a Carnot refrigerator, (b) a real refrigerator? A) decrease, same B) increase, increase C) decrease, increase D) same, increase E) same, decrease 2) 3) Using the kinetic model of an ideal gas, the way we go about determining the pressure exerted by a gas is to A) calculate the kinetic energy and then use the principal of virtual work. B) determine how many molecules strike a wall each second and what momentum change is associated with each, then apply F = dp/dt.
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