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Uses: Oxygen was the atomic weight standard of comparison for the other elements until 1961 when the International Union of Pure and Applied Chemistry adopted carbon 12 as the new basis. It is the third most abundant element found in the sun and the earth, and it plays a part in the carbon-nitrogen cycle.
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chemistry.about.com/od/elementfacts/a/oxygen.htm
chemistry.about.com/od/elementfacts/a/oxygen.htm
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Atomic mass - Wikipedia, the free encyclopedia
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The atomic mass (m a ) is the mass of an atom, most often expressed in unified atomic mass units. The atomic mass may be considered to be the total mass of protons, neutrons and electrons in a sin...
en.wikipedia.org/wiki/Atomic_mass
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Oxygen - Wikipedia, the free encyclopedia
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Oxygen (pronounced /ˈɒksɨdʒɨn/ , from the Greek roots ὀξύς (oxys) (acid, literally "sharp", from the taste of acids) and -γενής (-genēs) (producer, literally begetter) is the element with atomi...
en.wikipedia.org/wiki/Oxygen
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Atomic Structure ... ; Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page ... If you know of any other links for Oxygen, please let me know;
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www.chemicalelements.com/elements/o.html
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In a publication of the Smithsonian Institution, he introduced a new value for the atomic weight ratio of oxygen to hydrogen, providing the most precise determination of the atomic weight of oxygen ever. To this day, Morley’s investigation is regarded as the pinnacle of “wet-chemical” atomic weight measurements.
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portal.acs.org/portal/PublicWebSite/education/whatische...
portal.acs.org/portal/PublicWebSite/education/whatischemistry/landmarks/about/WPCP_012030
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For example: hydrogen and oxygen combine to form water, H2O. If you don't want any leftover hydrogen or oxygen, then the weight of oxygen you start with has to be eight times the weight of the hydrogen. ... Back to Atomic number...
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www.colorado.edu/physics/2000/periodic_table/atomic_wei...
www.colorado.edu/physics/2000/periodic_table/atomic_weight.html
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Atomic weight set to allow research accuracy; In 1895, Edward Morley calculated the atomic weight of oxygen as 15.879, setting an important new standard of accuracy. Nineteenth-century chemists used oxides to calculate the atomic weights of other elements, so this finding made their calculations more accurate as well.
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acswebcontent.acs.org/landmarks/front_t2.html
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The Encyclopedia Britannica is free at the JCSM Study Center! This page has information about OXYGEN (symbol 0, atomic weight 16) - Encyclopedia Britannica - OXYGEN (symbol 0, atomic weight 16) ... The atomic weight of oxygen is now generally taken as 16, and as such is used as the standard by which the atomic weights of...
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www.jcsm.org/StudyCenter/Encyclopedia_Britannica/ORC_PA...
www.jcsm.org/StudyCenter/Encyclopedia_Britannica/ORC_PAI/OXYGEN_symbol_0_atomic_weight_.html
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The full text of the IUPAC table of atomic weights ... World Wide Web version of atomic weight data originally prepared by G. P. Moss, from a file provided by D. R. Lide. ... A number in parentheses indicates the uncertainty in the last digit of the atomic weight.
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www.chem.qmul.ac.uk/iupac/AtWt/
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