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CaO + H 2 O → Ca(OH) 2 Ca(OH) 2 + CO 2 → CaCO 3 + H 2 O. In a laboratory, calcium carbonate can easily be crystallized from calcium chloride (CaCl 2), by placing an aqueous solution of CaCl 2 in a desiccator alongside ammonium carbonate [NH 4] 2 CO 3. [10] In the desiccator, ammonium carbonate is exposed to air and decomposes into ammonia ...
Caodaism (/ ˌ k aʊ ˈ d aɪ z ə m /; Vietnamese: Đạo Cao Đài; chữ Hán: 道高臺, IPA: [ʔɗaːw˧˨ʔ kaːw˧˧ ʔɗaːj˨˩]) or Cao Đài is a Vietnamese monotheistic syncretic religion that retains many elements from Vietnamese folk religion such as ancestor worship, [citation needed] as well as "ethical precepts from ...
Potassium oxide (K 2 O) is an ionic compound of potassium and oxygen.It is a base.This pale yellow solid is the simplest oxide of potassium. It is a highly reactive compound that is rarely encountered.
Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.
A substance of very high concern (SVHC) is a chemical substance (or part of a group of chemical substances) which has been proposed as a candidate for inclusion on the Authorization or Restriction list (see: ECHA Lists) of REACH. [1]
Cao is a Vietnamese surname. The name is transliterated as Gao in Chinese and Go in Korean . It is unrelated to the Chinese surname Cao , which is transliterated as Tào in Vietnamese .
Origin of title phenomenon in crystallographic defects. Shown is a two-dimensional slice through a primitive cubic crystal system showing the regular square array of atoms on one face (open circles, o), and with these, places where atoms are missing from a regular site to create vacancies, displaced to an adjacent acceptable space to create a Frenkel pair, or substituted by a smaller or larger ...
Hanoi University of Mining and Geology (Vietnamese: Trường Đại học Mỏ - Địa chất Hà Nội) is a university in the Bắc Từ Liêm district of Hanoi, the capital of Vietnam. It trains technical experts in exploration and exploitation of natural resources; in protection of mining and the geological environment; and to be a center ...