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Hace 9 horas · v. t. e. Nonmetals are chemical elements that mostly lack distinctive metallic properties. They range from colorless gases like hydrogen to shiny crystals like iodine. Physically, they are usually lighter (less dense) than metals; brittle or crumbly if solid; and often poor conductors of heat and electricity.
Hace 1 día · Desalination has been known to history for millennia as both a concept, and later practice, though in a limited form. The ancient Greek philosopher Aristotle observed in his work Meteorology that "salt water, when it turns into vapour, becomes sweet and the vapour does not form salt water again when it condenses," and also noticed that a fine wax vessel would hold potable water after being ...
Hace 9 horas · sacra. Sacra ( neuter plural of sacer) are the traditional cult practices of classical Roman religion, either publica or privata, both of which were overseen by the College of Pontiffs . The sacra publica were those performed on behalf of the whole Roman people or its major subdivisions, the tribes and curiae.
Hace 9 horas · The Og–F bond will most probably be ionic rather than covalent, rendering the oganesson fluorides non-volatile. OgF 2 is predicted to be partially ionic due to oganesson's high electropositivity. Oganesson is predicted to be sufficiently electropositive to form an Og–Cl bond with chlorine.
Hace 9 horas · 古典时代 （英語： classical antiquity ）或称为 古典时期 、 古典古代 ，是对 希臘-羅馬世界 （以 地中海 为中心，包括 古希腊 和 古罗马 等一系列文明）的长期文化 史 的一个广义称谓。. 在这个时期中，古希腊文明和古罗马文明十分繁荣，对欧洲、北非、西亞等 ...
Hace 9 horas · SS Ionic, passenger ship for White Star Line, launched 22 May 1902, completed 15 December 1902, maiden voyage 16 January 1903, scrapped 1936. SS Iowa, livestock/cargo transport for George Warren & Co, launched 15 August 1902, completed 11 November 1902, renamed Bohemia 1912, Artemis 1917—1941 and Empire Bittern 1941, sunk breakwater ship July ...
