The phrase "amount of vapour" is correct and usable in written English.
It can be used when discussing the quantity or concentration of vapor in a specific context, such as scientific or environmental discussions.
Example: "The amount of vapour in the atmosphere can significantly affect weather patterns."
Alternatives: "quantity of vapor" or "level of vapor".
If more particles grow from a given amount of vapour, each has to be smaller.
Volute centrifugal pumps can pump liquids containing solid particles, but, when pumping liquids containing more than a small amount of vapour, their suction is broken by cavitation.
However, Dr Wang-Rodriguez stressed that the results may not replicate the processes in the human body, as the amount of vapour used was "similar to someone smoking for hours on end".
After loading the air flow by a large amount of vapour, the water content can be easily recovered by cooling the humid air in dehumidification equipment.
Pesticides are normally applied to crops in the form of sprays but a certain amount of vapour is always present in any spray of a volatile compound.
The increase in cavitation intensity is caused by lowering vapour pressure and thus reducing the amount of vapour diffused into the bubbles to cushion the cavitational collapse (Adewuyi 2001).
The amount of water vapour transportation is determined by weighing the water vapour condensed from the fuel off-gas stream located at the anodic outlet of HT-PEMFC under a flow-through mode.
Since the rate of evaporation rises with temperature, the amount of water vapour in the air at any one time (and the amount of warming it causes) is strongly related to the amount of other greenhouse gases in the air.
However, the scientific evidence suggests that the warming caused by man-made emissions of CO2 and other greenhouse gases is increasing the amount of water vapour in the air by boosting the rate of evaporation.
The amount of water vapour that the atmosphere can hold increases as the atmosphere gets warmer, so the greenhouse properties of water vapour are usually considered to act as part of a feedback loop, rather than a direct cause of climate change.
