Quiz3 B - Exam Phase changes thermodynamic processes Name...

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Exam Phase changes, thermodynamic processes. Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following is a FALSE statement? A) Vibrational motion, as well as translational motion, can contribute to the heat capacities of gases. B) A dumbbell molecule like O 2 is considered to have six degrees of freedom. C) The average kinetic energy of a molecule moving translationally in three dimensions is always 3kT/2. D) The average kinetic energy associated with each degree of freedom of a molecule is 1/2kT. 2) Consider the equation Q = ΔU + W. Which of the following statements is FALSE? A) This is called the First Law of Thermodynamics. B) It follows that since Q and W are path dependent, then ΔU must also be path dependent. C) W is the work done by the system, and not on the system. D) Q can be positive or negative. 3) When an ideal gas is expanded in volume at constant pressure, the average kinetic energy of the gas
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Quiz3 B - Exam Phase changes thermodynamic processes Name...

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