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.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

6.4 cm (max) - 25 cm (min)