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| Why is that? are helium Molecules smaller than air or of a higher pressure than air? Also posted on seasonal wonder which brain boxes get this first. |
| 1) roughly how many breaths worth of oxygen are in your body (lungs or blood etc) at once? 2) Is the helium used to fill baloons pure helium, if not, what else is in it? 3) How come people seem to be... |
| nickname of american adveturere who built an aircraft from helium baloons |
| Nickname of US adventurer who created a homemade aircraft from helium baloons & a patio seat (22a) L?W?C???R (9 letters) Thanks in advance |
| Does a helium baloon deflate before an ordinary carbon dioxide baloon? If you had two baloons (one helium filled and the other blown up by breath) which would deflate first? Sorry, this is my 12 year... |
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