According to science, which gas is filled in football?

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In general, footballs or soccer balls are usually filled with air, which is a mixture of gases, primarily nitrogen (about 78%) and oxygen (about 21%). Small amounts of other gases, such as carbon dioxide, argon, and neon, may also be present in the air.

However, it is worth noting that some footballs used in professional matches or competitions may be filled with a specific gas mixture, such as a high-pressure nitrogen-oxygen mix or even helium, to help increase their speed and performance. These gas mixtures are often regulated and standardized by the governing bodies of the sport to ensure fairness and consistency

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