MadSci Network: Chemistry |
Dear Steve,
You have things just backwards. Your balloon is filled with air, and the box is filled with helium. Air is denser than helium, and you can't get an object to float if it is immersed in something that is less dense than the object (try it with rocks and water!) You need to fill the balloon with helium and the box with air. For more information, search for "buoyancy" with our search engine.
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Try the links in the MadSci Library for more information on Chemistry.