answersLogoWhite

0

yes because Humidity depends on water vaporization and condensation, which, in turn, mainly depends on temperature. Therefore, when applying more pressure to a gas saturated with water, all components will initially decrease in volume approximately according to the ideal gas law. However, some of the water will condense until returning to almost the same humidity as before, giving the resulting total volume deviating from what the ideal gas law predicted. Conversely, decreasing temperature would also make some water condense, again making the final volume deviate from predicted by the ideal gas law. Therefore, gas volume may alternatively be expressed as the dry volume, excluding the humidity content. This fraction more accurately follows the ideal gas law. On the contrary the saturated volume is the volume a gas mixture would have if humidity was added to it until saturation (or 100% relative humidity).

Humid air is less dense than dry air because a molecule of water (M ≈ 18 u ) is less massive than either a molecule of nitrogen (M ≈ 28) or a molecule of oxygen (M ≈ 32). About 78% of the molecules in dry air are nitrogen (N2). Another 21% of the molecules in dry air are oxygen (O2). The final 1% of dry air is a mixture of other gases.

For any gas, at a given temperature and pressure, the number of molecules present in a particular volume is constant - see ideal gas law. So when water molecules (vapor) are introduced into that volume of dry air, the number of air molecules in the volume must decrease by the same number, if the temperature and pressure remain constant. (The addition of water molecules, or any other molecules, to a gas, without removal of an equal number of other molecules, will necessarily require a change in temperature, pressure, or total volume; that is, a change in at least one of these three parameters. If temperature and pressure remain constant, the volume increases, and the dry air molecules that were displaced will initially move out into the additional volume, after which the mixture will eventually become uniform through diffusion.) Hence the mass per unit volume of the gas-its density-decreases. Isaac Newton discovered this phenomenon and wrote about it in his book Opticks.[14]

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

What if the US was on Greenland?

It would be a lot colder and take up more space than Greenland currently does already.


What weight oil does Chevy Cavalier take?

5W-30 in colder climates, 10W-30 in warmer climates.


How does convection take place in roasting a marshmallow?

Once the inside is more liquid-like, the upper substance comes down because it's relatively colder, and the warmer substance moves up. that cycle keeps going.


Can a samoyed dog take colder weather than other breeds?

Samoyeds have thick, double coats of fur that are designed to keep them warm in cold weather. They do best in colder climates and can easily overheat in warmer climates.


Why do you feel colder in space although you are moving closer to the Sun?

We feel colder in space although we are reaching closer to the Sun because there is no air and no dust particles present in the space. So there is nothing to absorb the heat from the Sun and radiation process can't take place.


How long does it take for guppys to be born?

Depends on the water temperature in your tank, if your water is warmer then they will have them sooner, but if your water is colder it'll take a little while longer. It is usually anywhere from 26-32 days.


How do you think the thickness of fur on grassland animals that moved to ca warmer place in winter compares to the fur of animals that didn't move?

The fur thickness probably would eventually change over a period of time, but then again it may not, because these animals that have moved from a colder climate to a more warmer one take time to acclimatize to their new environment.


How long do you have to wait before you can wet sand and buff Imron 3.5 HG clear coat?

few says at least depending on the temperature. Warmer temps would take about this much time to be safe. Colder temps par the ability of the clear to dry. Usually in colder temperatures you want to use more hardener when spraying to speed this process up.


Why does wind blow faster in warmer places?

Because there is more warmer air that will rise, and cooler air will move in to take its place, creating wind.


Why does a balloon get smaller if the air inside of it gets colder?

When the air inside a balloon cools down, its particles move more slowly and take up less space. This causes the balloon to shrink as the volume of the air decreases.


How do air molecules closer to the ground get their heat?

Air molecules closer to the ground get their heat through conduction, as they absorb heat from the warmer ground below. Additionally, they can also gain heat through convection, where warmer air rises and colder air moves in to take its place, creating a cycle of heat transfer.


When water freezes does it take up more space or less space?

The water will expand on freezing, so taking up more space.