Ozone (/ ˈ oʊ z oʊ n /) (or trioxygen) is an inorganic molecule with the chemical formula O 3.It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2, breaking down in the lower atmosphere to O 2 ().Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges within the ...

2025年1月31日 · Testers preferred o3-mini's responses to o1-mini 56% of the time and observed a 39% reduction in major errors on difficult real-world questions. With medium reasoning effort, o3-mini matches the performance of o1 on some of the most challenging reasoning and intelligence evaluations including AIME and GPQA.

2024年6月20日 · Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural and a man-made product that occurs in the Earth's upper atmosphere (the stratosphere) and lower atmosphere (the troposphere).

2024年4月17日 · What Is Ozone? Ozone (O 3) is a gas molecule composed of three oxygen atoms.Ozone is good up high, bad nearby. The ozone layer found high in the upper atmosphere shields us from much of the sun's ultraviolet radiation.

Ozone (O3) concentrations were measured from 1981-83 at each of three urban stations in the cities of Edmonton and Calgary and were compared with O3 values reported earlier in rural Alberta areas. Ozone concentrations in Alberta cities typically exhibit a max in May (up to 35 ppb) and a minimum in Nov (as low as 4 ppb).

2025年1月23日 · Ozone is 1.5 times as dense as oxygen; at −112 °C (−170 °F) it condenses to a dark blue liquid, which freezes at −251.4 °C (−420 °F).The gas decomposes rapidly at temperatures above 100 °C (212 °F) or, in the presence of certain catalysts, at room temperatures.Although it resembles oxygen in many respects, ozone is much more reactive; …

Christian Friedrich Schönbein. Ozone, or trioxygen, is a chemical with the symbol O 3.This means one molecule of ozone is made of three oxygen atoms.Ozone is rarely called trioxygen, even though this is its IUPAC systematic name. [3] Ozone is formed from oxygen gas (O 2) by the action of ultraviolet light and also atmospheric electrical discharges.It is present in low …

5 天之前 · The Benefits of the U.S. Clean Air Act for O 3 of NO x Emissions Reductions & Human Health. Benefits for O 3 & Human Health: NO x emissions have decreased by about 37% in the Eastern U.S. from 2002 to 2011, with reductions as high as 60% in some areas. A model study by Loughner et al. (2019) estimated the benefits of air pollution emission reductions on surface …

2022年1月26日 · Even though the ozone layer only contains a low concentration of the molecule, it is enough for absorbing harmful solar ultraviolet radiation. The combination of O2 and O3 entirely screens harmful UV-C and most UV-B. Some UV-B and nearly all UV-A reaches the Earth’s surface.

2024年5月14日 · Ozone is a gas composed of three atoms of oxygen. Ozone occurs both in the Earth's upper atmosphere and at ground level. Ozone can be good or bad, depending on where it is found.