Name the two gases from which water is formed. What is the chemical composition of these two gases in water ? Give the molecular formula of water.
name two gases which dissolve in water
(a) What is meant by 'diffusion'? Give one example of diffusion in gases.
(b) Why do gases diffuse very fast?
(c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?