Water is a very important factor for us individually, but its importance stretches further than that. for instance, because water absorbs very well, the oceans stabilize temperatures around the world.

1.25 cm/day

Explanation:

An air thickness , (l) = 0.15 cm

Air Temperature =

Mass Diffusion coefficient (D) =

If the air pressure

We are to determine how fast will the water level drop in a day.

From the property of air  at T = 20° C

from saturated water properties.

The mass flow of  can be calculated as:

where:

R(constant) = 8.314 kJ/mol.K

Since 1 mole = 18 cm ³ of water

will be:

Again:

Converting the above value to cm/day: we have:

= 1.25 cm/day

∴ the rate at which  the water level drop in a day = 1.25 cm/day