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Sintesis Wöhler

Sintesis Wöhler adalah perubahan amonium sianat menjadi urea.[1] Reaksi kimia ini ditemukan oleh Friedrich Wöhler pada tahun 1828. Penemuan ini dianggap sebagai titik awal dimulainya kimia organik modern.

Sintesis ini penting karena untuk pertama kalinya komponen organik dapat dihasilkan dari reaktan anorganik. Penemuan ini bertentangan dengan teori vitalisme yang meyakini bahwa materi organik mengandung kekuatan khusus atau kekuatan vital. Urea ditemukan pada tahun 1799 dan sebelumnya hanya bisa didapat dari sumber biologis seperti urin.

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Local authority in England For the city council in Ontario, Canada, see Peterborough City Council (Ontario). Peterborough City CouncilTypeTypeUnitary authority LeadershipMayorNick Sandford, Liberal Democrat since 23 May 2023[1] LeaderMohammed Farooq, Peterborough First since 1 November 2023[2] Chief ExecutiveMatthew Gladstone since 2022[3] StructureSeats60 councillors[4]Political groups   Conservative (23)   Labour (14)   Peterborough First …

Oakes FegleyFegley (kiri) tahun 2019LahirOakes Tonne Fegley11 November 2004 (umur 19)Allentown, Pennsylvania, Amerika SerikatPekerjaanAktorTahun aktif2011–sekarang Oakes Tonne Fegley (/ˌoʊˈks ˈfɛˌɡliː/;[1][2] lahir 11 November 2004)[3] adalah aktor asal Amerika Serikat. Dia telah membintangi beberapa film termasuk, Pete's Dragon (2016), Wonderstruck (2017), The Goldfinch (2019), The War with Grandpa (2020) dan The Fabelmans (2022). Awal kehidupan Fegle…

Batocera ushijimai Klasifikasi ilmiah Kerajaan: Animalia Filum: Arthropoda Kelas: Insecta Ordo: Coleoptera Famili: Cerambycidae Subfamili: Lamiinae Tribus: Batocerini Genus: Batocera Spesies: Batocera ushijimai Batocera ushijimai adalah spesies kumbang tanduk panjang yang tergolong famili Cerambycidae. Spesies ini juga merupakan bagian dari genus Batocera, ordo Coleoptera, kelas Insecta, filum Arthropoda, dan kingdom Animalia. Larva kumbang ini biasanya mengebor ke dalam kayu dan dapat menyebabk…

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Michel Vauzelle Michel Vauzelle en 2012. Fonctions Président du conseil régional de Provence-Alpes-Côte-d'Azur 23 mars 1998 – 31 décembre 2015(17 ans, 9 mois et 8 jours) Élection 23 mars 1998 Réélection 2 avril 200426 mars 2010 Prédécesseur Jean-Claude Gaudin Successeur Christian Estrosi Député français 17 juin 2007 – 20 juin 2017(10 ans) Élection 17 juin 2007 Réélection 17 juin 2012 Circonscription 16e des Bouches-du-Rhône Législature XIe (Cinquième Ré…

Command line utility of DOS and Microsoft Windows operating systems fdiskScreenshot of FDISK on MS-DOSDeveloper(s)Robert Baron, IBM, Microsoft, Digital Research, Datalight, Novell, Brian E. ReifsnyderInitial release1983, 40–41 years agoOperating systemMS-DOS, PC DOS, FlexOS, SISNE plus, OS/2, eComStation, ArcaOS, Windows, DR DOS, ROM-DOS, FreeDOS, PTS-DOS, *BSD,[1] SysVTypeCommandLicenseMS-DOS, PC DOS, FlexOS, OS/2, Windows, DR DOS, ROM-DOS, PTS-DOS: Proprietary commercial software…

أييوس بانتيليمون تقسيم إداري البلد اليونان  [1] خصائص جغرافية إحداثيات 38°06′59″N 23°58′55″E / 38.116388888889°N 23.981944444444°E / 38.116388888889; 23.981944444444   الارتفاع 5 متر  السكان التعداد السكاني 1471 (resident population of Greece) (2021)1181 (resident population of Greece) (2001)272 (resident population of Greece) (1991)1591 (resident pop…

Desert in Iran Dasht-e LutSand castles in the Dasht-e Lut near Kerman, IranDasht-e LutLocation within IranFloor elevation108 m (354 ft)[1]Length480 km (300 mi)Width320 km (200 mi)Area51,800 km2 (20,000 sq mi)GeographyCountryIranCoordinates30°36′18″N 59°04′04″E / 30.60500001°N 59.0677777878°E / 30.60500001; 59.0677777878  UNESCO World Heritage SiteOfficial nameLut DesertCriteriavii, viiiReference15…

1964–1986 American commuter airline Not to be confused with Imperial Airways. This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (August 2012) (Learn how and when to remove this template message) This article nee…

German writer (1877–1962) This article is about the German writer. For the Ghanaian technology entrepreneur, see Herman Chinery-Hesse. This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. (September 2023) Hermann HesseBorn(1877-07-02)2 July 1877Calw, Kingdom of Württemberg, German EmpireDied9 August 1962(1962-08-09) (aged 85)Montagnola, Ticino, Swi…

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Chemical compound AnitrazafenClinical dataATC codenoneIdentifiers IUPAC name 5,6-bis(4-methoxyphenyl)-3-methyl-1,2,4-triazine CAS Number63119-27-7PubChem CID44410ChemSpider40409 YUNII2Y065P7MYRKEGGD02948 YChEMBLChEMBL2105947CompTox Dashboard (EPA)DTXSID50212454 Chemical and physical dataFormulaC18H17N3O2Molar mass307.353 g·mol−13D model (JSmol)Interactive image SMILES n2c(nnc(c1ccc(OC)cc1)c2c3ccc(OC)cc3)C InChI InChI=1S/C18H17N3O2/c1-12-19-17(13-4-8-15(22-2)9-5-13)18(21-20-12)1…

Character used to substitute for any other character/s in a string For wildcard characters within the Wikipedia search engine, see Help:Wildcard. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: Wildcard character – news · newspapers · books · scholar · JSTOR (May 2016) In software, a wildcard characte…

Television show filmed in Vancouver First WaveGenre Science fiction Alien invasion Action Adventure Created byChris BrancatoStarring Sebastian Spence Rob LaBelle Roger Cross Traci Lords ComposersDaryl BennettJim Guttridge (Hypnotic)Claude FoisyThe Collison Brothers (season three)Country of originCanadaOriginal languageEnglishNo. of seasons3No. of episodes66 (list of episodes)ProductionExecutive producers Francis Ford Coppola Larry Sugar Production locationVancouver CanadaCinematographyHenry Chan…

American TV series or program Madman of the PeopleGenreSitcomCreated by Chris Cluess Stu Kreisman Directed by James Burrows Jim Drake Philip Charles MacKenzie John Ratzenberger Starring Dabney Coleman Concetta Tomei Amy Aquino Craig Bierko Cynthia Gibb John Ales Country of originUnited StatesOriginal languageEnglishNo. of seasons1No. of episodes16 (list of episodes)ProductionExecutive producers Chris Cluess Stu Kreisman E. Duke Vincent Aaron Spelling Producers Penny Adams Stephen C. Grossman Cam…

Княжество Силенд характеризуется как наиболее известное виртуальное государство[1]. Виртуа́льное госуда́рство (сокр. ВГ; от англ. virtual state[2]) — общее наименование для любых образований, которые заявляют о себе как о суверенных политиях, способных быть субъект…

Song by Buddy Holly HeartbeatSingle by Buddy HollyB-sideWell... All RightReleasedNovember 5, 1958RecordedAugust 1958GenreRock and roll, pop rockLength2:11LabelCoral RecordsSongwriter(s)Bob Montgomery, Norman PettyProducer(s)Norman PettyBuddy Holly singles chronology Early in the Morning (1958) Heartbeat (1958) It Doesn't Matter Anymore (1958) Heartbeat is a rockabilly song originally recorded by Bob Montgomery and credited to Norman Petty. It was recorded most famously by Buddy Holly in 1958. Th…

此條目可参照英語維基百科相應條目来扩充。 (2021年5月6日)若您熟悉来源语言和主题,请协助参考外语维基百科扩充条目。请勿直接提交机械翻译,也不要翻译不可靠、低品质内容。依版权协议,译文需在编辑摘要注明来源,或于讨论页顶部标记{{Translated page}}标签。 约翰斯顿环礁Kalama Atoll 美國本土外小島嶼 Johnston Atoll 旗幟颂歌:《星條旗》The Star-Spangled Banner約翰斯頓環礁地…

Эта статья — о нарушениях в области половой функции мужчины. О расстройствах основных проявлений сексуальности см. Сексуальные дисфункции. Запрос «Импотент» перенаправляется сюда; о фильме см. Импотент (фильм). Эта статья или раздел нуждается в переработке.П…

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