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Unformatted text preview: Name: ________________________ Class: ___________________ Date: __________ ID: A 1 PracticeTest4Exam4 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. An interval of one Celsius degree is equivalent to an interval of: a. one Fahrenheit degree. b. one kelvin. c. 5/9 Fahrenheit degree. d. 5/9 kelvin. ____ 2. A long steel beam has a length of twenty-five meters on a cold day when the temperature is 0 C. What is the length of the beam on a hot day when T = 40 C? ( steel = 1.1 10 5 /C ) a. 25.000 44 m b. 25.004 4 m c. 25.011 m d. 25.044 m ____ 3. A 2.00-L container holds half a mole of an ideal gas at a pressure of 12.5 atm. What is the gas temperature? ( R = 0.082 1 L atm/mol K) a. 1 980 K b. 1 190 K c. 965 K d. 609 K ____ 4. Two ideal gases, X and Y, are thoroughly mixed and at thermal equilibrium in a single container. The molecular mass of X is 9 times that of Y. What is the ratio of root-mean-square velocities of the two gases, v X, rms / v Y, rms ? a. 9/1 b. 3/1 c. 1/3 d. 1/9 ____ 5. On a sunny day at the beach, the reason the sand gets so hot and the water stays relatively cool is attributed to...
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- Fall '10
- Thermodynamics, heat c. temperature