1. El estado gaseoso

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Global Grade

Revision mode

¿Qué tiene en común hinchar un globo, que una pelota se deshinche al dejarla en el exterior una noche y que una botella se hinche o aplaste al ascender o descender una montaña?

Todos estos fenómenos dependen del comportamiento de un determinado estado de agregación, el gaseoso, y son independientes de la composición del gas.

Para poder describir el comportamiento de un gas, utilizaremos una serie de variables macroscópicas que describen el gas en su conjunto, sin preocuparse de cómo está constituido:

Nuestro objetivo consiste en averiguar qué relación tienen estas tres variables entre sí. Para ello, mantendremos una variable fija y observaremos cómo se relacionan las otras dos entre sí.

Esto originará un conjunto de leyes experimentales que relacionan la presión, el volumen y la temperatura de una determinada masa de gas. Este trabajo fue realizado por distintos científicos, los cuales dan nombre a cada una de las leyes.

Los actuales cambios de protocolos web pueden dificultarte el acceso a alguno de los enlaces.

Para evitarlo, en la siguiente dirección te proporcionamos un nuevo enlace y el planteamiento correspondiente:

http://bit.ly/Enlace_2_0_1BAC_U2

Una de las variables macroscópicas que se utilizan para describir el comportamiento de un gas es la presión. Selecciona las unidades que corresponden a esta magnitud física.

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1 El estado gaseoso

Unidades de presión