what is water vapour?
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when the air is saturated the water vapor condenses
water vapor first condenses as water droplets and last freezes as ice crystals
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Water vapor, water vapour or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor is transparent, like most constituents of the atmosphere.
Specific gas constant: 461.5 J/(kg·K)
Molar mass: 18.01528(33) g/mol
Solid state: Ice
Molecular formula: H2O
Heat capacity at 300 K: 1.864 kJ/(kg·K)
Boiling point: 99.98 °C (373.13 K)
Heat of vaporization: 2.27 MJ/kg
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