Molecules that possess only london dispersion forces will have roughly the same melting points. true false

False

Explanation:

Non polar molecules possess dispersion forces due to momentary shifts in the electron cloud of the molecule. The molecular mass is important in deciding the extent of London dispersion forces. The greater the relative molecular mass, the greater, the greater the degree of London dispersion forces and vice versa. The greater the degree of London dispersion forces, the greater the melting and boiling points. Since all molecules possessing London dispersion forces do not all have the same relative molecular mass but widely different relative molecular masses, they cannot all have roughly the same melting point.

c is the answer because when something is left after something evaporates that shows the chemical change.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.