The number one gas in martian atmosphere is carbon dioxide.
No part of the atmosphere consists of one gas only.
An atmosphere is a layer of gas that is part of a planet, and usually surrounds it solid part, if there is a solid part. so for each planet, there is one and only one plant in its atmosphere. The earth is the only planet in the Earth's atmosphere; Mars is the only plant in the Martian atmosphere; etc.,
The least prominent gas in the atmosphere is xenon. It represents no more than one percent on the air in the atmosphere.
The ozone gas is the important one in atmosphere. It is present inside the stratospheric region of atmosphere.
At standard temperature and pressure (0 degrees Celsius and 1 atmosphere), one mole of any ideal gas contains approximately 6.022 x 10²³ particles, which is known as Avogadro's number. Therefore, if you have a balloon filled with one mole of gas at these conditions, you have about 6.022 x 10²³ gas particles in that balloon.
Argon is one of them
Oxygen makes up approximately one-fifth of Earth's atmosphere.
Ideal gas law: PV=nRT. number of moles is 0.0414335 moles. x avagadros number is 2.495x1022 molecules
Oxygen is one of the products of photosynthesis and is the gas that rose in abundance in the atmosphere due to the process of photosynthesis.
To convert Earth days into Martian days, you need to know that one Martian day, or sol, is approximately 24 hours and 39 minutes long. To perform the conversion, multiply the number of Earth days by the ratio of a Martian sol to an Earth day, which is about 1.02749. This means that for every Earth day, you add a little more than a day to find the equivalent in Martian days. For example, 10 Earth days would be approximately 10.2749 Martian days.
When it comes to determining a gas giant's volume, diameter, etc., the "surface" is the depth in the planet's atmosphere at which the air pressure equals one atmosphere (the same air pressure as in the earth's atmosphere at sea level).
There are so many gases in the atmosphere. The most prominent is one of the minority gases which is the carbon dioxide.