Give the definition for diffusion. gas molecules mix unequally gas molecules spread out in a concentration gradient gas molecules mix equally average distance between collisions gas molecules escape from a container into a vacuum through a small hole

Gas molecules spread out in a concentration gradient.

Explanation:

The correct option is

Gas molecules spread out in a concentration gradient.

Diffusion can be defined as the net passive moment of particles (atoms, ions, molecules) from a region where their concentration is higher to the region where their concentration is less. The process is continued till the concentration of particles are equal on both the  regions.

For examples the noxious smell of ammonia spreading in air.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.