why water is in vapour state at the same altitude ice on mountains?

The mountain surfaces are usually colder than the surrounding air at high altitudes.So, if the air containing water vapour, comes into contact with the mountain surface ,the water vapour is brought down to a temperature below the dew point and it directly becomes ice( as the temperature is below zero degrees at that level).The air which is not in contact with the mountain surface wiil however contain the water vapour as it is not brought down to dewpoint temperature to get solidified.Sometimes you can see clouds at that level containing minute ice crystals which shows that ice can exist in air, apart from mountain tops at the same level.

Even at ground level, you can notice that the air temperature near the surface and that of the surface itself is different.That is why surface temperature is taken at a height of 2 to 3 feet above ground level .Similarly the temperature of the mountain surface and that of the adjacent air will be different even though they are at the same level.

At extreme altitudes where the air pressure is very low the freezing temperature and the boiling temperature of water are very close so the water sublimes (goes directly from ice to vapor). Also if you leave water in an ice tray open in the freezer it will disappear for a similar reason.

While there are scientists that will say that this explanation is not entirely correct the actual scientific explanation is difficult to understand without some background and would take too many words for this forum.

If you check the phase diagram for H2O, you will see that ice and water vapor can coexist at low temperatures and low pressures indicated by the equilibrium line of the two phases. So these two factors prevent water from forming, allowing the other two phases to exist, only at those specific conditions though.

It is not "vapor"...its humidity coming from water, because the surrounding temperature, frezes it forming a mass of condensed humidity....its frozen humidity..in the same fashion that an ice cube or dry ice (carbon dyoxide at minus 269 centigrades) emit frozen humidity from the surrounding air....not vapor..

Vapor, is the result of the change of liquid state into a hot gas (called thus vapor), after boling att 100 centigrades (Celsius)...a very different type of gas....

the two those solutions are incredible to 3 quantity. in spite of the undeniable fact that, the decreased stress additionally ability decreased oxygen and a flame based heater isn't as useful. this would mean that it easily takes longer to boil on the actual of a mountain even although the boiling element is way less.

triple h will win the title again,and yes he drinks a'lot of water!

nerd