Question

what is helium? dynamic equilibrium between liquid and pressure ​

Answer 1

helium is an element or a gas . it is the lightest gas

Answer 2

Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements.

A very light colourless gas that does not burn often used to fill objects that float on the air.

The rate of evaporation is not zero, so the vapor pressure builds up to the point where the rates of evaporation and condensation are equal to each other. At this point, the system is in dynamic equilibrium, and the partial pressure of vapor in the container is equal to the equilibrium vapor pressure of the liquid.