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- Abundance_of_the_chemical_elements abstract "The abundance of a chemical element measures how relatively common (or rare) the element is, or how much of the element is present in a given environment by comparison to all other elements. Abundance may be variously measured by the mass-fraction (the same as weight fraction), or mole-fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume-fraction. Measurement by volume-fraction is a common abundance measure in mixed gases such as planetary atmospheres, and is close to molecular mole-fraction for ideal gas mixtures (i.e., gas mixtures at relatively low densities and pressures).For example, the mass-fraction abundance of oxygen in water is about 89%, because that is the fraction of water's mass which is oxygen. However, the mole-fraction abundance of oxygen atoms in water is only 33% because only 1 atom of 3 in water is an oxygen atom. In the universe as a whole, and in the atmospheres of gas-giant planets such as Jupiter, the mass-fraction abundances of hydrogen and helium are about 74% and 23–25% respectively, while the (atomic) mole-fractions of these elements are closer to 92% and 8%. However, since hydrogen is diatomic while helium is not, in the conditions of Jupiter's outer atmosphere, the molecular mole-fraction (fraction of total gas molecules, or fraction of atmosphere by volume) of hydrogen in the outer atmosphere of Jupiter is about 86%, and for helium, 13%.Most abundances in this article are given as mass-fraction abundances.".
- Abundance_of_the_chemical_elements thumbnail 080998_Universe_Content_240.jpg?width=300.
- Abundance_of_the_chemical_elements wikiPageExternalLink ?id=PXGWGnPPo0gC&printsec=frontcove.
- Abundance_of_the_chemical_elements wikiPageExternalLink fs087-02.
- Abundance_of_the_chemical_elements wikiPageExternalLink dict_ei.html.
- Abundance_of_the_chemical_elements wikiPageExternalLink element_abundances.pdf.
- Abundance_of_the_chemical_elements wikiPageExternalLink PTelements.asp?s=Earth.
- Abundance_of_the_chemical_elements wikiPageExternalLink periodicity.
- Abundance_of_the_chemical_elements wikiPageID "392828".
- Abundance_of_the_chemical_elements wikiPageRevisionID "604688062".
- Abundance_of_the_chemical_elements hasPhotoCollection Abundance_of_the_chemical_elements.
- Abundance_of_the_chemical_elements subject Category:Astrochemistry.
- Abundance_of_the_chemical_elements subject Category:Properties_of_chemical_elements.
- Abundance_of_the_chemical_elements type Abstraction100002137.
- Abundance_of_the_chemical_elements type Possession100032613.
- Abundance_of_the_chemical_elements type PropertiesOfChemicalElements.
- Abundance_of_the_chemical_elements type Property113244109.
- Abundance_of_the_chemical_elements type Relation100031921.
- Abundance_of_the_chemical_elements comment "The abundance of a chemical element measures how relatively common (or rare) the element is, or how much of the element is present in a given environment by comparison to all other elements. Abundance may be variously measured by the mass-fraction (the same as weight fraction), or mole-fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume-fraction.".
- Abundance_of_the_chemical_elements label "Abbondanza chimica".
- Abundance_of_the_chemical_elements label "Abondance d'un élément chimique".
- Abundance_of_the_chemical_elements label "Abundance of the chemical elements".
- Abundance_of_the_chemical_elements label "Abundancia de los elementos químicos".
- Abundance_of_the_chemical_elements label "Abundantie (scheikunde)".
- Abundance_of_the_chemical_elements label "Abundância dos elementos químicos".
- Abundance_of_the_chemical_elements label "Częstość występowania pierwiastków we Wszechświecie".
- Abundance_of_the_chemical_elements label "Liste der Häufigkeiten chemischer Elemente".
- Abundance_of_the_chemical_elements label "Распространённость химических элементов".
- Abundance_of_the_chemical_elements label "وفرة العناصر الكيميائية".
- Abundance_of_the_chemical_elements label "化學元素豐度".
- Abundance_of_the_chemical_elements sameAs Liste_der_Häufigkeiten_chemischer_Elemente.
- Abundance_of_the_chemical_elements sameAs Abundancia_de_los_elementos_químicos.
- Abundance_of_the_chemical_elements sameAs Abondance_d'un_élément_chimique.
- Abundance_of_the_chemical_elements sameAs Abbondanza_chimica.
- Abundance_of_the_chemical_elements sameAs Abundantie_(scheikunde).
- Abundance_of_the_chemical_elements sameAs Częstość_występowania_pierwiastków_we_Wszechświecie.
- Abundance_of_the_chemical_elements sameAs Abundância_dos_elementos_químicos.
- Abundance_of_the_chemical_elements sameAs m.022xcz.
- Abundance_of_the_chemical_elements sameAs Q428867.
- Abundance_of_the_chemical_elements sameAs Q428867.
- Abundance_of_the_chemical_elements sameAs Abundance_of_the_chemical_elements.
- Abundance_of_the_chemical_elements wasDerivedFrom Abundance_of_the_chemical_elements?oldid=604688062.
- Abundance_of_the_chemical_elements depiction 080998_Universe_Content_240.jpg.
- Abundance_of_the_chemical_elements isPrimaryTopicOf Abundance_of_the_chemical_elements.
