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By mole fraction (i.e., by quantity of molecules), dry air contains 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other trace gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.
From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO2 and trace gases. Water vapor is excluded from this total.
The three gases with the highest percentages in the atmosphere are all elements: 78% nitrogen, N₂. 21% oxygen, O₂. 0.9% argon, Ar. These three gases make up 99.9% of the atmosphere. The...
19 Οκτ 2023 · Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.
2 Ιουλ 2024 · In short, the atmosphere is the protective bubble in which we live. This protective bubble consists of several gases (listed in the table below), with the top four making up 99.998% of all gases. Of the dry composition of the atmosphere, nitrogen by far is the most common.
13 Μαΐ 2024 · The troposphere interacts with the Earth’s surface, creating gradients in temperature that drive motion in air and water. The water from the Earth’s surface converts to water vapor via evaporation and transpiration and moves throughout the troposphere, where it condenses into clouds.
27 Αυγ 2024 · Nitrogen and oxygen together make up 99% of the planet’s atmosphere. The rest of the gases are minor components but sometimes are very important. Humidity is the amount of water vapor in the air. Humidity varies from place to place and season to season.
