Question

What is relative humidity? and what is the formula of percentage relative humidity.​

Answer 1

Relative Humidity:

• Relative humidity (RH) refers to the moisture content  (ie., water vapor) of the atmosphere, expressed as a percentage of the amount of moisture that can be retained by the atmosphere at a given temperature and pressure without condensation.
• Relative humidity of air is defined as the ratio of the vapor pressure of air to its saturation vapor pressure.
• The equilibrium relative humidity (ERH) of a food products is define as relative humidity of the air surrounding the food that is in equilibrium with its environment.
• When the equilibrium is obtained, the ERH is equal to the water activity multiplied by 100. When a food is exposed to a constant humidity, the Product will gain or lose moisture until the ERH is reached.
• The moisture significantly affects the physical and chemical properties of the food.

       Formula:

      Relative Humidity( percentage)= actual vapor pressure/ saturated vapor pressure* 100.

Answer 2

Answer:

Relative humidity

Explanation:

(RH) is a measure of the water vapor content of air. More explicitly, it is the amount of water vapor present in air expressed as a percentage (%RH) of the amount needed to achieve saturation at the same temperature.

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