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Nitrigen,oxygen and Argon.

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Q: What is the composition of dry air?
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Why is the amount of gases in the atmosphere usually shown as percentages of dry air?

Showing the amount of gases in the atmosphere as percentages of dry air allows for easy comparison and analysis of the composition of the atmosphere. Since the composition of dry air is relatively stable, expressing the gases as percentages of dry air helps to standardize the data for scientific purposes.


What are two most common gases in dry air and what percentage of earth's atmosphere composition does each gas make up?

The two most common gases in dry air are nitrogen (N2) at approximately 78% and oxygen (O2) at around 21% of Earth's atmosphere composition.


Why is dry air used to figure out the percent of each part of the atmosphere?

The amount of water vapor that air can hold varies according to temperature. If you started with saturated air at 30 °C and cooled it down to 10 °C, water would condense out of it - changing the composition. The other gaseous components would not condense out until you reached cryogenic temperatures (ever heard of liquid nitrogen?). The composition of dry air is thus fairly constant but humid air varies widely according to temperature and degree of saturation, so it doesn't make a very good standard for describing the composition of air.


Most of Earths dry air is made up of whAT?

Most of Earth's dry air is made up of nitrogen (about 78%) and oxygen (about 21%). Other gases such as argon, carbon dioxide, and water vapor make up the remaining composition.


Why are the amount gases in the atmosphere usually shown as percentages of dry air?

Showing gas concentrations as percentages of dry air allows for easier comparison of the relative amounts of different gases in the atmosphere. Dry air is a consistent reference point because its composition is relatively stable, making it a convenient baseline for expressing variations in gas concentrations.


How does air temperature change with atmospheric composition?

The composition of air depends upon altitude.


Is dry air homogeneous or heterogeneous mixture?

Dry air is considered a homogeneous mixture because it is made up of a uniform composition of gases, primarily nitrogen, oxygen, and trace amounts of other gases.


How does the composition of air change at the top of amountain?

The composition is the same, the air is just less dense.


Why do you think that nitrogen gas is the composition of dry air?

Nitrogen gas makes up about 78% of Earth's atmosphere, which is what is considered as "dry air." It is a stable and non-reactive gas that helps maintain the balance of gases in the atmosphere. Other gases like oxygen, argon, and carbon dioxide make up the rest of the dry air.


Is dry air a solid or a liquid?

Dry air is a gas


What is the composition of gases found in inhaled air?

gas composition in air is the sum of the gas individual element and that of the air i.e oxygen and nitrogen


What is Density of air at 0 C?

At standard pressure (100 kPa), dry air at 0 °C has a density of 1.2754 kg/m3 or 1.2754 g/L. Changing the composition, pressure, temperature or humidity changes the density.