Answer: Imidogen
Explanation: I just looked it up.
Answer : The ratio of
to
is, 
Solution : Given,

= 0.21 atm
The given equilibrium reaction is,

The expression of
will be,

Now put all the given values in this expression, we get:



Therefore, the ratio of
to
is, 
There are many differentiates between them. Like if you standing these two mixture, the soil and water will separate while milk will not. And colloid have tyndall effect while soil and water doesn't have.
Kinetic energy of the molecules increases and we are close to boiling point liquids. Then strain the liquid and gas pressure reached equilibrium
.