about 4%

the volume of the atmosphere is roughly 4,200,000,000 cubic kilometers.

One estimate of global water distribution

Water is present in variable amounts in the atmosphere, from 0 % to 4 %. Unlike oxygen and nitrogen, the concentration of oxygen depends on local weather conditions and changes greatly from place to place on Earth.

“Water is wet because when something is wet, it has water on it and on a molecular level, water molecules are bonded on top of each other, therefore water is wet.” An extension to the previous argument that a couple of students brought up was that one water molecule alone is not wet, but when water molecules touch each …

Water as a gas in the atmosphere is called water vapor.

The amount of water in the air greatly varies. When large amounts of water are present in the air other elements are present in lower amounts. The amount of water in the air can rise up to 4%….What does air consist of?

Although you can’t see water vapor, you can feel it. On humid days, there’s a lot of water vapor in the air. You feel hotter and stickier than on less-humid days because the water vapor is slowing down the evaporation of sweat. (As sweat evaporates, your skin feels cooler.)

We can show that air is dissolved in water with the help of following activity: Take some water in a glass or metal container like pan and heat it. Just before water begins to boil, you will notice some bubbles at the inner surface of the pan. These bubbles come from the air dissolved in water.

Of this total, 21% is oxygen and 79% is nitrogen. The relative humidity is the actual water vapor partial pressure expressed as a fraction of the saturated vapor pressure at the same temperature.

Yes, for many practical purposes, you may use the ideal gas law also as an approximation for water vapour. The ideal gas law does not give you a value for the second quantity. For example, assuming equilibrium conditions for saturated steam at a temperature of T=298.00 K, the corresponding pressure is p=3141.7 Pa.

Water does not form anything close to an ideal gas because of its hydrogen bonds. You have to heat water to 100 °C to make it boiling to overcome these bonds between molecules of liquid water. Molecules of water vapour interacts with each other as well, especially at high pressure.

Due to repulsion the actual volume of the hydrogen and helium gas is greater than the volume of an ideal gas. So, the value of the compressibility factor for hydrogen and helium is greater than one. So, hydrogen and helium both have a compressibility factor greater than one at critical condition.

where Z is the gas compressibility factor, P is pressure, V is volume, n is the number of moles, R is ideal gas constant and T is temperature. If you have an ideal gas, Z will be 1. Because remember, the ideal gas law states that PV = nRT, so a ratio of PV/nRT would be one because PV and nRT equal each other.

Answer. It is the matter of fact that due to pV = nRT, the compressibility factor of all ideal gases are equal to 1 as they have strong dipole due to large surface area. Hence, it can be inferred that case of hydrogen and helium the compressibility factor is always greater than 1.

The compressibility factor of a gas is defined as Z=pV/(nRT). If attractive intermolecular forces dominate then Z tends to be smaller than 1, and vice versa if repulsive forces dominate.

the value of Z tends toward 1 as the gas pressure approaches 0, where all gases tend toward ideal behavior. the value of Z is greater than 1 and ultimately tends toward infinity at high pressures because the intermolecular repulsive forces cause the actual volumes to be greater than the ideal values.

Gas Laws: Boyle’s Law, Charle’s Law, Gay-Lussac’s Law, Avogadro’s Law.

Compressibility can be defined as the proportional reduction in the thickness of a material under prescribed conditions of increased pressure or compressive loading.37.

We use this property in our daily lives. Natural gas is compressed to liquid gas and stored in gas cylinders and used as fuel. By compression of air we can blow things like balloon and at the same time deflate them. By compression of gases we can pump air into the bicycle tire using a pump.

Compressibility is the property of being reduced to a smaller space by pressure. The compressibility of fluid is basically a measure of the change in density that will be produced in the fluid by a specified change in pressure.

The compressibility of water is 4 x 10 ^-5 per unit atmosphere pressure.

Mercury

Liquid is incompressible because of the quality of its particles. The volume of liquid doesn’t changes with the pressure. That’s why it is not easy to compress it. Compressibility means= volumetric strain/change in pressure.

Water is essentially incompressible, especially under normal conditions. Yet, in industrial applications water can be tremendously compressed and used to do things like cut through metal.