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Hace 10 horas · Otto Hahn ( pronounced [ˈɔtoː ˈhaːn] ⓘ; 8 March 1879 – 28 July 1968) was a German chemist who was a pioneer in the fields of radioactivity and radiochemistry. He is referred to as the father of nuclear chemistry and father of nuclear fission. Hahn and Lise Meitner discovered radioactive isotopes of radium, thorium, protactinium and ...
Hace 4 días · Nobel Prize - Chemistry, Discoveries, Innovations: The table provides a chronological list of recipients of the Nobel Prize for Chemistry.
Hace 5 días · It is sometimes referred to as Baeyer's reagent after the German organic chemist Adolf von Baeyer. The reagent is an alkaline solution of potassium permanganate. Reaction with double or triple bonds (-C=C- or -C≡C-) causes the color to fade from purplish-pink to brown.
Hace 4 días · Adolf Hitler (born April 20, 1889, Braunau am Inn, Austria—died April 30, 1945, Berlin, Germany) was the leader of the Nazi Party (from 1920/21) and chancellor ( Kanzler) and Führer of Germany (1933–45). His worldview revolved around two concepts: territorial expansion and racial supremacy.
Hace 2 días · Nobel Prize, any of the prizes (five in number until 1969, when a sixth was added) that are awarded annually from a fund bequeathed for that purpose by the Swedish inventor and industrialist Alfred Nobel. The Nobel Prizes are widely regarded as the most prestigious awards given for intellectual achievement in the world.
Hace 2 días · In 1865 begon de Duitse scheikundige Adolf von Baeyer met indigo te werken. Dit resulteerde in de synthese van indigo in 1880. Drie jaar later werd de chemische structuur bekendgemaakt. BASF ontwikkelde een commerciële productietechniek, die vanaf 1897 in gebruik werd genomen.
Hace 3 días · Assim, é frequente encontrarmos alcenos e ciclanos isômeros. Para diferenciá-los em laboratório, o químico alemão Adolf von Baeyer elaborou um teste baseado na oxidação branda com KMnO4 (de cor violeta). alceno @@@#[O] brando H2O reage ciclano @@@#[O] brando H2O não reage Alcenos reagem, pois possuem ligação dupla, e ciclanos, não.
