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Etiketa: 2017 wikitestu editorearekin
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{{Wikipedia1000}}
{{argitzeko|Urari|Ur (argipena)}}
{{konposatu kimiko infotaula}}
 
{{chembox
| verifiedrevid = 477162647
| Name = Ura (H<sub>2</sub>O)
| ImageFile1 = H2O 2D labelled.svg
| ImageSize1 = 170 px
| ImageName1 = Estruktura
| ImageFileL1 = Water-3D-balls.png
| ImageSizeL1 = 121px
| ImageNameL1 = Modelo
| ImageFileR1 = Water molecule 3D.svg
| ImageSizeR1 = 121px
| ImageNameR1 = Modelo
| IUPACName = Ura<br />Oxidana
| OtherNames = Hidrogeno oxido<br />Dihidrogeno monoxido (DHMO)<br/>Hidrogeno monoxido<br/>Dihidrogeno oxido<br/>Hidrogeno hidroxido (HH edo HOH)<br>Azido hidriko<br>Azido hidrohidroxiko<br>Azido hidroxiko<br>Hidrol<ref>[http://www.merriam-webster.com/dictionary/hydrol Definition of Hydrol] Merriam-Webster</ref><br>μ-Oxido dihidrogeno
| Section1 = {{Chembox Identifiers
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 1098659
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/H2O/h1H2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = XLYOFNOQVPJJNP-UHFFFAOYSA-N
| SMILES = O
| CASNo = 7732-18-5
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem = 962
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 937
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 15377
| RTECS = ZC0110000
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 059QF0KO0R
}}
| Section2 = {{Chembox Properties
| Formula = H<sub>2</sub>O
| MolarMass = 18.01528(33)&nbsp;g/mol
| Appearance = solido zuri eta ia koloregabea, garden, izoztean urdin pixka bat <ref name="Braun 1993 612">{{erreferentzia|doi=10.1021/ed070p612|abizena1=Braun|izena1=Charles L.|izena2=Sergei N. |abizena2= Smirnov|izenburua=Why is water blue?|aldizkaria=J. Chem. Educ.|liburukia=70|alea=8|orrialdea=612|urtea=1993|url=http://www.dartmouth.edu/~etrnsfer/water.htm|bibcode = 1993JChEd..70..612B }}</ref>
| Density = 1000&nbsp;kg/m<sup>3</sup>, likido (4&nbsp;°C) (62.4 lb/cu. ft)<br /> 917&nbsp;kg/m<sup>3</sup>, solido
| MeltingPt = 0&nbsp;[[celsius gradu|°C]], 32&nbsp;[[fahrenheit gradu|°F]], 273.15&nbsp;[[Kelvin (unitatea)|K]]<ref name="VSMOW">''Vienna Standard Mean Ocean Water'' (VSMOW) estandarrak 273.1500089(10)&nbsp;K (0.000089(10)&nbsp;°C-tan urtzen eta 373.1339&nbsp;K (99.9839&nbsp;°C)-tan irekitzen du.</ref>
| BoilingPt = 99.98&nbsp;°C, 211.97&nbsp;°F, 373.13&nbsp;K<ref name="VSMOW" />
| pKa = 15.74<br />~35–36
| pKb = 15.74
| Viscosity = 0.001&nbsp;[[pascal segundo|Pa&thinsp;s]] 20&nbsp;°C-tan
| Self-diffusion coefficient = 2.299·10<sup>−9</sup>&nbsp;m²·s<sup>−1</sup> <ref name="waterdiffusion">{{erreferentzia|egilea=M. Holz, S. R. Heil, A. Sacco|izenburua=Temperature-dependent self-diffusion coefficients of water and six selected molecular liquids for calibration in accurate 1H NMR PFG Measurements|aldizkaria=Phys. Chem. Chem. Phys.|liburukia= 2|urtea= 2000| orrialdea= 4740–4742|doi=10.1039/b005319h|alea=20|bibcode = 2000PCCP....2.4740H }}</ref>
| RefractIndex = 1.3330
}}
| Section3 = {{Chembox Structure
| MolShape = Kurba
| CrystalStruct = [[Izotz|Hexagonal]]
| Dipole = 1.85&nbsp;[[Debye|D]]
}}
| Section7 = {{Chembox Hazards
| MainHazards = Ito<br/>[[Ur intoxikazio]]a
| NFPA-H = 0
| NFPA-F = 0
| NFPA-R = 0
}}
| Section8 = {{Chembox Related
| OtherCations = [[Hidrogeno sulfuro]]<br/>[[Hidrogeno selenuro]]<br/>[[Hidrogeno teluro]]<br/>[[Hidrogeno polonuro]]<br/>[[Hidrogeno peroxido]]
| Function = [[disolbatzaile]]ak
| OtherFunctn = [[azetona]]<br/>[[metanol]]
| OtherCpds = [[ur lurrun|ur-lurrun]]<br/>[[izotz]]<br/>[[ur gogor]]
}}
}}
 
'''Ura''' [[gai kimiko]] garden eta ia koloregabea da, [[Lur]]reko ibai, aintzira eta [[ozeano]]en eta organismo bizidun gehienetako fluidoen osagai nagusia. '''H<sub>2</sub>O''' [[formula kimiko]]a du, hau da, ur [[molekula]] bakoitzak [[oxigeno]] [[atomo]] bat eta [[hidrogeno]] atomo bi ditu, [[lotura kobalente]]z elkartuak. [[Giro-tenperatura]]n [[likido]]a da. Bizitzarako nahitaezkoa dela uste da, ez baita ezagutzen uraren gabezia osoan bizi den izakirik. Urak Lur planetaren azalaren %&nbsp;71 estaltzen du<ref>{{erreferentzia|url=https://www.cia.gov/library/publications/the-world-factbook/geos/xx.html#Geo|izenburua=CIA- The world factbook|egilea=[[CIA|Central Intelligence Agency]]}}</ref>. Ur horren %&nbsp;97,2 [[ur gazi|gazia]] da, eta %&nbsp;2,8 [[ur geza|geza]]<ref name=usgs1>
{{erreferentzia|url=http://ga.water.usgs.gov/edu/waterdistribution.html|egilea=U.S. Geological Survey|izenburua=Earth's water distribution}}</ref>. Ur geza horren %&nbsp;1 baino ez dago egoera likidoan, gainerakoa [[Polo geografiko|poloetan]] [[izotz|izoztuta]] baitago.
"https://eu.wikipedia.org/wiki/Ur"(e)tik eskuratuta