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German-Dutch alchemist and chemist Johann Rudolf Glauber (1604–1670) believed that the alkahest was a class of substances, rather than one, particular substance. [9] Glauber believed he had discovered alkahest after discovering that volatile niter ( nitric acid ) and fixed niter ( potassium carbonate ) were able to dissolve several substances.
In 1853, he habilitated with a thesis on the physiology of aquatic plants at the University of Leipzig, where he worked as a professor from 1861 and as a full honorary professor of agricultural chemistry from 1880. From 1856 to 1866, he was also head of the scientific department of the Möckern Agricultural Experiment Station near Leipzig.
Potions distributed by chemists for illnesses were often derived from herbs and plants, and based on old beliefs and remedies. [16] Prior to the Pharmacy Act 1868 anybody could become a pharmacist or chemist. Since the practice was unregulated, potions were often made from scratch. [17] Potions were additionally used to cure illness in livestock.
The Gomberg–Bachmann reaction, named for the Russian-American chemist Moses Gomberg and the American chemist Werner Emmanuel Bachmann, is an aryl-aryl coupling reaction via a diazonium salt. [1] [2] [3] The arene compound (here benzene) is reacted with a diazonium salt in the presence of a base to provide the biaryl through an intermediate ...
Chefs weigh in on how much salt is needed for the best-tasting pasta after a video of Food Network celebrity chefs showing their approach to the task went viral on social media.
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In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively charged ions and negatively charged ions , [1] which results in a compound with no net electric charge (electrically neutral). The constituent ions are held together by electrostatic forces termed ionic bonds.
Add chicken stock, peas, water, thyme leaves, salt and pepper. Bring to a boil, partially cover the pan and reduce heat to low and simmer for 30 minutes. While the peas simmer make the cornbread ...