Question

There are 15 water molecules in the air, and the relative
humidity is 75 percent. The maximum potential number of
water molecules is :

A. 15
B. 20
C.25
D.30​

Answer 1

Answer:

The maximum potential number of water molecules is 20

Answer 2

The correct option is (B)20.

• The greatest amount of water molecules that could be present in the air depends on its temperature and pressure. We may nonetheless estimate the total number of water molecules that would be present in the air if it were completely saturated with water vapour at the current pressure and temperature using only the information that is currently available.
• The ratio of the actual amount of water vapour in the air to the greatest amount of water vapour that the air can contain at a specific temperature and pressure is known as the relative humidity, and it is stated as a percentage.
• Under the present pressure and temperature, it can contain as much water vapour as possible.
• So, the following formula can be used to determine the maximum possible quantity of water molecules in the air:
• (Actual quantity of water molecules in the air) / (maximum possible number of water molecules) (relative humidity)
• Greatest possible number of molecules of water = 15 / 0.75
• 20 is the maximum number of possible water molecules.

#SPJ3