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What does 25 percent realtive humidty in the air mean?
It means that the air at the current temperature has 25% of the maximum moisture available at that temperature before becoming saturated. Relative hunmidity is relative to the amount of moisture the air can hold at temperature. It is relative because at higher temperature the air can hold more moisture. So at say 90F and 25% relative humidity there is much more moisture than at 70F and 25% relative humidity.
What does it mean when humidity is 100 percent?
This is called relative humidity. It is the ratio between the actual humidity, and the humidity for saturated air - that is, the maximum amount of water air can hold. This saturation point is dependent on temperature.
What is the ratio of RH?
The ratio of relative humidity (RH) is a measure of the amount of water vapor present in the air compared to the maximum amount of water vapor the air can hold at a specific temperature. It is typically expressed as a percentage. For example, if the RH is 50%, it means the air is holding half of the maximum amount of water vapor it can hold at that temperature. RH plays a crucial role in weather forecasting, agriculture, and indoor comfort levels.
If the air temperature is 75 degrees Fahrenheit what is the temperature on the Kelvin scale?
297 Kelvins
Why is the term a cubic meter of air unsatisfactory?
Because it doesn't say neither the temperature, the pressure or the humidity of the air. You need to know both the temperature, the pressure and the humidity of the air to say anything about the mass of one cubic meter of air.
