evaporation is when water vapour rises up and condensation is when water vapour turns into clouds
Water vapour is a constituents in air because water vapour rises in the atmosphere & is always present in the atmospere in some or the other quantity.Also 0.0001% of air consist water vapour
Steam.
Cloud.
It starts from 100 celcius in 1atm and can be risen further. At lower pressures eg on tops of mountains, it can be lower. Water boils when the pressure of water vapour exceeds the external atmospheric pressure. Below that, any bubble of water vapour which might start to form is immediately compressed back to liquid.
A hygrometer is used to measure water vapor in the atmosphere. This instrument can measure humidity levels in the air to determine the amount of water vapor present.
Relative Humidity is the measure of water vapour in air. It is the ratio of the actual water vapour in air divided by the maximum amount the water the air can hold at the existing temperature and pressure. It tells how fast or slow the water on the body or in clothes will evaporate or in otherwords is the air dry or humid. Absolute measure of water vapour in air is called specific humidity. It can be measured as ratio of mass of water and mass of dry air.
Ordinary room air will have only about 4% of water vapour in it, but this can increase quite a lot before the air feels uncomfortable.Relative Humidity is the usual measure of the amount of water vapour in the air, and can vary from a few% (normal) to over 90% (humid). At 90%, the air is NOT 90% water vapour; that figure indicates that the air contains 90% of the amount of water vapour it could contain when fully saturated.For very low percentages of water vapour in the air, (say below 1%) a useful measure and one more easily made, is to measure the dew point of the air. For this, the instrument contains a small shiny mirror that may be cooled to the point where dew just forms on the mirror surface, thus spoiling the reflection.
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Humidity is the measure of how much water vapour there is in the ambient atmosphere. In a similar way, though not quite, that temperature is a measure of how much heat a substance has.
A hydrometer is typically used to measure the weight of water. It works based on the principle of buoyancy, where the instrument floats in water, with the depth of sinking indicating the density and weight of the water.
There are a lot of instruments used to measure water volume. There's also the displacement method to measure liquids.
It is called water vapour or simply vapour.
The molecular mass of water vapour is 18.01528
It is because water vapour is air so it can't be seen but when we breath out in the mirror,water vapour is found.
Water Vapour is a colourless, odourless gas which is made of tiny water droplets.
Water Vapour is a colourless, odourless gas which is made of tiny water droplets.