Add a drop of dye to the edge of the system by clicking in a corner of the simulator space. How does the red dye eventually diffuse throughout the simulation space?单项选择题

A

We actually still don't know the forces that are at play in this phenomenon.

B

Dye movement is totally random, but all movement is away from where the dye was placed.

C

Solvent (blue) molecules push the dye away from where it was placed until equilibrium is reached.

D

Dye movement is totally random, but there is *net* movement of dye from high concentration to low concentration.

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