Nitrogen is the major constituent of Earth's atmosphere, so it is, in a way, exactly as heavy as air. Though nitrogen makes up the bulk of the atmosphere by volume, almost 21 percent of the air is composed of molecular o... More »

Carbon dioxide, also known by the chemical formula CO2, has a higher density than the other gases found in air, which makes CO2 heavier than air. Air is composed of approximately 78 percent nitrogen, 21 percent oxygen, a... More »

Carbon dioxide, also known by the chemical formula CO2, has a higher density than the other gases found in air, which makes CO2 heavier than air. Air is composed of approximately 78 percent nitrogen, 21 percent oxygen, a... More »

The normal phase of nitrogen is the gas phase, which means that nitrogen is found naturally in the atmosphere as a gaseous compound. The element has a chemical symbol of N and an atomic number of seven. More »

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Nitrogen is the fifth most abundant element in the universe, and makes up 78 percent of the Earth's atmosphere. Nitrogen is a gas at room temperature and has an atomic number of seven. Nitrogen has a wide number of pract... More »

Argon occurs naturally in the Earth's atmosphere and people source it by taking the liquid air and putting it through fractionation. The total argon in the atmosphere is only about 0.94 percent volume, making it the most... More »

One interesting fact regarding the chemical element argon is that an estimated 65 trillion metric tons of argon is present in Earth's atmosphere, as claimed by one of the element's discover, Lord Rayleigh. Argon was join... More »