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5. Mai 2024 · Carl Wilhelm Scheele Michael Faraday Sir Humphry Davy (Show more) Related Topics: chemical element halogen bleach chlorine deficiency chlorine-36 (Show more) See all related content → . Recent News. May 5, 2024, 1:53 AM ET (USA Today) M ...
2. Mai 2024 · Rätselhaft war jedoch, unter welchen Bedingungen dies geschah. Dies stand im Widerspruch zu den Beobachtungen des Chemikers Carl Wilhelm Scheele, der angab, dass Pflanzen die Luft verschlechtern können. Zur Klärung dieses unterschiedlichen Beobachtungen führte Ingenhousz nach seiner Rückkehr aus Wien 1779 umfangreiche Versuchsreihen durch.
Vor 4 Tagen · Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Scheele, who called it "dephlogisticated marine acid" (see phlogiston theory) and mistakenly thought it contained oxygen. Scheele observed several properties of chlorine gas, such as its bleaching effect on litmus, its deadly effect on insects, its yellow-green colour, and the similarity of its smell to that of aqua regia .
25. Apr. 2024 · Der Name Furan leitet sich vom lateinischen Wort furfur für Kleie ab. Als erstes Furanderivat stellte der Chemiker Carl Wilhelm Scheele 1780 Furan-2-carbonsäure (Brenzschleimsäure) her. Johann Wolfgang Döbereiner berichtete 1831 von einem weiteren wichtigen Derivat, dem Furfural , neun Jahre später konnte es der schottische Chemiker John Stenhouse charakterisieren.
23. Apr. 2024 · Scheele никога не е давал бележките, които е правил в лабораторията по време на своите експерименти или проучвания. Някои учени твърдят, че той е успял да завърши изследванията си за кислорода, преди да завърши ...
Vor 2 Tagen · Carl Wilhelm Scheele l-a întrecut pe Priestley cu descoperirea, dar a publicat mai târziu. Oxigenul a fost descoperit pentru prima dată de către farmacistul suedez Carl Wilhelm Scheele. El a produs oxigen gazos prin încălzirea oxidului mercuric și a diverșilor azotați prin anul 1772.
3. Mai 2024 · Both the Swedish chemist Carl Wilhelm Scheele and the English experimenter Joseph Priestley isolated oxygen from the air in the early 1770s, but Priestley published his findings first and conducted varied experiments, showing that the sort of air that kept a mouse alive was also the kind that was involved when fire burned; he noted that plants replenished this part of the air while animals ...
