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1. Applying chemical potential and partial pressure concepts to understand the spontaneous mixing of helium and air in a helium-inflated balloon

Author

Jee-Yon Lee, Hee-Soo Yoo, Jong Sook Park, Kwang-Jin Hwang, and Jin Seog Kim

Subjects
Hot air balloons -- Research, Helium -- Research, Chemistry, Education, Science and technology
Abstract

The spontaneous mixing of helium and air in a helium-inflated balloon is described in an experiment in which the partial pressure of the gases in the balloon are determined from the mole factions and the total pressure measured in the balloon. The results described provide a model for teaching concepts of partial pressure, chemical potential, and diffusion to chemistry students.

Published
2005

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