Why the molecules still moving to create the diffusion and the effusion?

[WARGREYMONKKTL]

i know that the molecules in the "freedom" form that have charges equal 0. but i wonder why the molecules still moving to create the diffusion and the effusion?
some one please explain to me. thanks:!)

 

[Tide]

It is unclear exactly what you're asking.

 

[Galileo]

Diffusion and effusion are not results of any particular interaction between the molecules (except collisions). It is a statistical effect resulting from having a gazillion particles. It works just as well with billiard balls.
I hope it clarifies your question somewhat.

 

[HallsofIvy]

Why wouldn't they move? I think you are saying that because they do not have a net charge the molecues would have no force on them. That's not true- there are other forces. But even if a molecule has no force on it, that doesn't mean it is motionless. It would still move (at constant speed in a straight line) until there was a force (such as hitting another molecule).