Decide whether each of the terms or brief descriptions in the left column corres

Question

Decide whether each of the terms or brief descriptions in the left column correspond with the processes of diffusion, effusion or both in the right column.

small opening

both            effusion            diffusion      

exiting a container

both            effusion            diffusion      

concentration gradient

both            effusion            diffusion      

movement of gas

both            effusion            diffusion      

slower than root-mean-square velocity

both effusion or diffusion

Explanation / Answer

Diffusion refers to the spreading of a gas throughout the space or into a second gas or substance whereas effusion refers the escape of a gas through an orifice.

small opening: Effusion

exiting a container : Both

concentration gradient : Diffusion

movement of gas: Both

slower than root-mean-square velocity: diffusion

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