Atmosphere composition
Atmospheric science offers one plausible real-life application of the density form of the ideal gas equation. Earth's atmosphere is composed of gases that support life—as the image shows, oxygen involved in the water cycle, sulfur emissions from oceans, methane from agriculture, and more. The density form of the Ideal Gas Law enables us to study the behavior of these gases without enclosing them in a container of known volume.
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"Atmosphere composition diagram."
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