review_Ch10Ans - Chapter 10 Review Multiple Choice Questions 1 At a temperature of 300K all gases(like He Ar Kr have average kinetic energies and they

review_Ch10Ans - Chapter 10 Review Multiple Choice...

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January 28, 2010Chapter 10 ReviewMultiple Choice Questions1.At a temperature of 300K, all gases (like He, Ar, Kr) have ____ average kinetic energies andthey have ____.a.different; different average velocitiesb.different; the same average velocitiesc.the same; different average velocitiesd.the same; the same average velocitiesWhen gases have the same temperature, they should have the same amount ofkinetic energies. However, we have different gases with different molar masses,their velocities will be different (Graham’s Law).2.At a given temperature, which gas has the lowest average molecular speed?3.Which molecules of the following gases will have the greatest average kinetic energy?4.When referring to a gas, temperature is proportional to the square root of the average velocityof the molecules.
January 28, 2010

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