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Utilice la ecuacin de Kelvin para calcular el radio de un tubo con un extremo abierto dentro del cual podra esperarse una condensacin capilar de

Utilice la ecuacin de Kelvin para calcular el radio de un tubo con un extremo abierto dentro del cual podra esperarse una condensacin capilar de nitrgeno a 77 K y una presin relativa de 0,75. Suponga que la adsorcin previa de nitrgeno ha formado una capa de 0,9 nm de espesor que recubre el interior del tubo. Para el nitrgeno a 77 K la tensin superficial es de 8,85 mN m-1 y el volumen molar es de 34,7 cm3 mol-1.

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