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The meaning of OXYGEN is a chemical element with atomic number 8 that constitutes 21 percent of the Earth's atmosphere, that is capable of combining with all elements except some noble gases, that is active in physiological processes of almost all known organisms, and that is involved especially in combustion —often used before another noun.
Oxygen accounts for about 23% of the atmosphere's mass with pairs of oxygen atoms stuck together to make dioxygen molecules, but it's not just in the air, we breathe. Overall, it's the most abundant element on the earth's surface and the third most abundant in the universe after hydrogen and helium.
Oxygen therapy or supplemental oxygen is the provision of medical oxygen as a healthcare intervention. Only medicinal-grade oxygen that complies with current quality standards, as for example described by The International Pharmacopoeia ( Medicinal Oxygen (Oxygenium Medicinalis), Draft proposal for revision in The International Pharmacopoeia, 5 ...
Sep 29, 2014 · Density: 0.001429 grams per cubic centimeter. Phase at Room Temperature: Gas. Melting Point: minus 361.82 degrees Fahrenheit (minus 218.79 degrees Celsius) Boiling Point: minus 297.31 degrees F ...
oxygen, Gaseous chemical element, chemical symbol O, atomic number 8. It constitutes 21% (by volume) of air and more than 46% (by weight) of Earth’s crust, where it is the most plentiful element. It is a colourless, odourless, tasteless gas, occurring as the diatomic molecule O 2.
Oxygen is a chemical element. It has the symbol O and atomic number 8. It is the third most common element in the universe, after hydrogen and helium. Oxygen is more than a fifth of the Earth's atmosphere by volume. In the air, two oxygen atoms usually join to make dioxygen (O 2), a colourless gas. This gas is often just called oxygen.
Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O2.
