Exam 4-1.3 - 8. If oxygen gas and hydrogen gas are kept at...

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Sample Exam 4-1 Dr. V. Williamson © Vickie M. Williamson 2007, All Rights Reserved 6. According to the kinetic-molecular theory, A. Gas molecules lose small amounts of energy as they collide. B. The pressure exerted on a gas affects the speed of its molecules. C. Gas molecules have rapid straight-line motion between collisions. D. The absolute temperature of a gas depends on its molar mass. E. Gas molecules are monatomic. 7. In the phase diagram, which is true? A. If the compound is in state E, continued reduction of the pressure (at constant temperature) will cause it to melt. B. If the compound is in state E, continued reduction of the temperature (at constant pressure) will cause it to freeze. C. C to E represents a gas condensing to a liquid D. B represents vaporizing or boiling (a gas and a liquid in equilibrium) E. E to G represents a liquid cooling to form a solid
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Unformatted text preview: 8. If oxygen gas and hydrogen gas are kept at the same temperature and pressure, the hydrogen molecules on the average A. move at the same speed as the oxygen molecules. B. move faster than the oxygen molecules. C. move more slowly than the oxygen molecules D. have the greater kinetic energy E. have a lower kinetic energy 9. The vapor pressure of four different substances at 20C is given in the table. Substance Vapor Pressure (in mmHg) A 0.0012 B 18 C 175 D 442 Which statement is correct? A. The viscosity of D should be greater than that of B. B. The intermolecular forces between B molecules should be greater than those between A molecules. C. The normal boiling point of C should be greater than that of B. D. The heat of vaporization of C should be greater than that of B. E. The surface tension of B should be greater than that of C...
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This note was uploaded on 02/18/2012 for the course CHEM 101 taught by Professor Williamson during the Fall '08 term at Texas A&M.

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