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Why does dew appear in early morning and not at noon?
the air capacity for holding water depends on temp'. the warmer it is the more water vapour it can hold. during the night air temp' drops to its lowest near dawn at which point the amout of water vapour in the air may exceed its reduced capacity (this point is called the dew point) and water vapour condences and forms dew.
Does dew tform when the air temperature is below freezing.?
No, dew is liquid water and it forms when the air temperature drops sufficiently that the air can no longer hold all its water vapour. This must be above freezing point. Of course the same argument applies when the temperature does drop below zero, but then we get ice crystals instead of water drops, and we call it frost.
Why does antifreeze boil faster than water?
It does NOT boil faster than water. It has higher boiling point AND lower freezing point. - Antifreeze boils at about 197 c.
Why does relative humidity depend on air temperature?
Relative Humidity is the ratio of the mass of vapour present in a certain volume of air to the mass of water vapour required to saturate the same volume of air at the same temperature. Another way of defining relative humidity is related to dew point. I.e relative humidity=s.v.p at dew point over s.v.p at air temperature multiply by 100%. And dew point is dependent upon prevalent atmospheric conditions like TEMPERATURE,wind and the amount of water vapour in the atmosphere.
How does water vapour affect air pressure?
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How does dew get on the grass?
As air gets colder, the amount of water it can hold as water vapour goes down. It reaches a point where the air releases the water as dew but stays saturated with water vapour. If this point is below the freezing point of water, it is deposited as frost.
The freezing point of water when its frozen?
the theoretical freezing point of water remains 0°C whether it is already frozen (ice) or liquid form (water) or gaseous (water vapour).
When does sublimation happen?
When unsaturated vapour is cooled down under freezing point
What is the freezing point of water in Celsius?
The freezing point of water in Celsius is 0 degrees.
Does salt affect the temperature of water -boiling point - freezing point?
i would opt for the Freezing point. salt decreases the freezing point of water. so if water would normally freeze at 0C, saltwater would freeze at -3C.
What is 0 degrees Celsius?
It is the freezing point of water and equivalent to 32 degrees fahrenheit it is freezing! In Fahrenheit, it is 32 degrees. It is also the freezing point of water in Celsius.
What kind of property is melting point and freezing point of water?
The melting point and freezing point of water are physical properties. The melting point is the temperature at which ice (solid) changes to water (liquid), while the freezing point is the temperature at which water (liquid) changes to ice (solid).
How does salt affect the melting and freezing point of water?
Salt decreases the freezing point of water and increases the boiling point of water.
How is the freezing point of stearic acid compared to the freezing point of water?
Because water evapurates
What is water vapour at boiling point?
Steam
What is the melting and freezing point of water in Kelvin?
Freezing point: 273.15 K Melting point: 373 K
What does freezing point means?
freezing point means the point water(H20) freezes at.
