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- 1. Multiple ChoiceIf a gas with an odor is released in a room, it quickly can be detected across the room because itdiffusesis denseis compressedcondenses
- 2. Multiple ChoiceAccording to the kinetic-molecular theory, how does a gas expand?its particles become largercollisions between particles become elasticits temperature risesits particles move greater distances
- 3. Multiple ChoiceWhich is an example of effusion?air slowly escaping from a pinhole in a tirethe aroma of a cooling pie spreading across a roomhelium dispersing into a room after a balloon popsoxygen and gasoline fumes mixing in an automobile carburetor
- 4. Multiple ChoiceWhat happens to the volume of a gas during compression?the volume increasesthe volume decreasesthe volume remains constantit is impossible to tell because all gases are different
- 5. Multiple ChoiceUnder which conditions do real gases most resemble ideal gases?low pressure and low temperaturelow pressure and high temperaturehigh pressure and high temperaturehigh pressure and low pressure
- 6. Multiple ChoiceThe intermolecular forces between particles in a liquid can involve all of the following exceptLondon dispersion forceshydrogen bondingdipole-dipole attractionsgravitational forces
- 7. Multiple ChoiceThe compressibility of a liquid is generallyless than that of a gasmore than that of a gasequal to that of a gaszero
- 8. Multiple ChoiceThe particles in a liquid are usuallycloser together and lower in energy than those in a solidfarther apart and higher in energy than those in a gascloser together and lower in energy than those in a gasfarther apart and lower in energy than those in a solid
- 9. Multiple ChoiceWhich term best describes the process by which particles escape from the surface of a nonboiling liquid and enter the gas state?sublimationevaporationsurface tensionaeration
- 10. Multiple ChoiceWhich of these can happen due to decreasing the average energy of a liquid's particles?vaporizationevaporationa random arrangementfreezing
- 11. Multiple ChoiceIn general, most substances areleast dense in the liquid statemore dense as gases than as solidsless dense as solids than as liquidsmost dense in the solid state
- 12. Multiple ChoiceWhich of the following properties do solids share with liquids?fluiditydefinite shapedefinite volumeslow rate of diffusion
- 13. Multiple ChoiceWhich causes the high density of solids?the particles are more massive than those in liquidsthe intermolecular forces between particles are weakthe particles are packed closely togetherthe energy of the particles is very high
- 14. Multiple ChoiceCompared with a crystalline solid, the particles in an amorphous solidoccur in a random patternoccur in a definite, three-dimensional arrangementconsist of molecular sheetshave a more complex unit cell
- 15. Multiple ChoiceIf the temperature of a liquid-vapor system at equilibrium increases, the new equilibrium condition willhave a lower concentration of vaporhave an increased vapor pressurenot have equal rates of condensation and evaporationbe larger in volume
- 16. Multiple ChoiceAt its triple point, water canhave only three pressure valuesexist in equilibrium in three different phasesonly be present as vaporexist only as a solid
- 17. Multiple ChoiceA volatile liquidhas strong attractive forces between particlesevaporates readilyhas no odoris ionic
- 18. Multiple ChoiceThe equilibrium vapor pressure of a liquid increases with increasing temperature becausethe rate of condensation decreasesthe average energy of the particles in the liquid increasesthe volume decreasesthe boiling point decreases
- 19. Multiple ChoiceWhy would a camper near the top of Mt. Everest find that water boils at less than 100oC?There is greater atmospheric pressure than at sea levelthe flames are hotter at that elevationthere is less atmospheric pressure than at sea levelthe atmosphere has less moisture
- 20. Multiple ChoiceWhich instrument measure atmospheric pressure?barometermanometervacuum pumptorrometer
- 21. Multiple ChoiceA pressure of 745 mm Hg equals745 torr1 torr1 pascal745 pascal
- 22. Multiple ChoiceConvert the pressure 0.840 atm to mm Hg365 mm Hg437 mm Hg638 mm Hg780 mm Hg
- 23. Multiple ChoiceStandard temperature is exactly100oC273oC0oC0 K
- 24. Multiple ChoiceStandard pressure is exactly1 atm760 atm101.325 atm101 atm
- 25. Multiple ChoiceWho developed the concept that the total pressure of a mixture of gases is the sum of their partial pressure?CharlesBoyleKelvinDalton
- 26. Multiple ChoiceA mixture of four gases exerts a total pressure of 860 mm Hg. Gases A and B each exert 220 mm Hg. Gas C exerts 110 mm Hg. What pressure is exerted by gas D?165 mm Hg310 mm Hg860 mm Hg220 mm Hg
- 27. Multiple Choice
A sample of gas is collected by water displacement at 600.0 mm Hg and 30oC. What is the partial pressure of the gas?568.2 mm Hg600.0 mm Hg630 mm Hg631.8 mm Hg - 28. Multiple ChoiceThe volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L?0.5 atm5.0 atm0.20 atm800 atm
- 29. Multiple ChoiceThe volume of a gas is 5.0 L when the temperature is 5.0oC. If the temperature is increased to 10.0oC without changing the pressure, what is the new volume?2.5 L4.8 L5.1 L10.0 L
- 30. Multiple ChoiceThe volume of a sample of oxygen is 300.0 mL when the pressure is 1.00 atm and the temperature is 27.0oC. At what temperature is the volume 1.00 L and the pressure 0.500 atm?22.0oC45.0oC0.50 K227oC
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