viernes, 8 de junio de 2007

Sublimación del dióxido de carbono

Si estamos buscando “efectos especiales”, podemos añadir nieve carbónica o hielo seco (CO2 en estado sólido) a agua caliente. El CO2 que se encuentra a una temperatura de unos -78ºC, en contacto con el agua caliente pasa directamente a fase gaseosa (se sublima) y genera una nube de dióxido de carbono.
En el vídeo utiliza un recipiente de vidrio y lo que me sorprende es que no estalle debido al cambio de temperatura. El hielo seco se debe manipular con guantes, su baja temperatura puede provocar quemaduras en la piel.

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es una de las mejores paginas que conozco... pero ojala pudiera traducirze al español los videos.

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el vidrio debe ser refractario

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