- #141
Matterwave
Science Advisor
Gold Member
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Yea, I think the balloon blew away from the release of the gas rather than floated. Although, with a heavy gas, you have to be careful because it won't leave your lungs naturally since it sinks to the bottom. My professor made a demonstration with a heavy gas once, but he had to basically half-invert himself to get the gas out of his lungs.