ork Chapter 0 Item 8 8 of 8 Part A Which of the following statements are true? C

Question

ork Chapter 0 Item 8 8 of 8 Part A Which of the following statements are true? Check all that apply. View Available Hint(s) Al the gas molecules n sample cannot have the same kinetic energy. The temperature of a gas sample is independent of the average kinetic energy. The average speed of gas molecules decreases in decresng temperature. There are gas molecues that move faster than the average. The average kinetic energy of gas malecules increases with Incressing Semperature Part B What are each of the following observations an example of? Drag the appropriate items to their respective bins. View Available Hint(s) If the sghily packed f food is placedin Hlr pray in the lvingnoom 30 hrough the

Explanation / Answer

PART A

all the gas molecules may not have the same kinetic energy

False, as the expression for average kinetic energy, is 3/2*r/Na*T

Yes, it is clear from the average kinetic energy equation

Yes, as it is random motion, the free path, collision with a container or other molecules determines this

True, it is same as explained in the avg. kinetic energy Eq.

PART B

This is an example of diffusion of the vapour (gas) from the cookies into the atmosphere because of difference in concentration of the same throughout the room

Kitchen: This is also a case of effusion. Particles/molecules move out through the pores

Baloon gases escape to the atmosphere as the balloon is blown, the pores of the rubber of the balloon enlarge, giving away the inside gas to the environment. This is effusion

Heat spray work same as explained above in case of cookies. The difference in concentration leads to diffusion

PART

No, RMS speed also depends on molar mass

No, RMS speed depends on the inverse root of the molar mass

True, the explanation is the same

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