alkali purification
31Hydroxide — Lewis structure of the hydroxide ion showing three lone pairs on the oxygen atom …
32Activated carbon — Activated carbon, also called activated charcoal, activated coal or carbo activatus, is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions …
33oxide — oxidic /ok sid ik/, adj. /ok suyd, sid/, n. Chem. a compound in which oxygen is bonded to one or more electropositive atoms. Also, oxid /ok sid/. [1780 90; < F (now oxyde), b. oxygène and acide. See OXYGEN, ACID] * * * I Any of a large and… …
34Zinc chloride — Zinc chloride …
35Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known …
36Platinum — This article is about the chemical element. For other uses, see Platinum (disambiguation). iridium ← platinum → gold Pd ↑ Pt ↓ Ds …
37Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal …
38Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… …
39Fermium — Not to be confused with Ferrum , the Latin name for Iron. einsteinium ← fermium → mendelevium …
40Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
