Just saw the stupid commercial and wondered....
Turns out the solubility of helium (in water) is way low .0016 g/kg vs 2.5 g/kg at 10c. (at sea level ie. Standard Conditions) Might be able to fill the headspace with enough to get the voice effect though, if you could get it to your mouth before it dissapated.
http://www.engineeringtoolbox.com/ga...er-d_1148.html
(Boy- I need to get back to work!! )
Turns out the solubility of helium (in water) is way low .0016 g/kg vs 2.5 g/kg at 10c. (at sea level ie. Standard Conditions) Might be able to fill the headspace with enough to get the voice effect though, if you could get it to your mouth before it dissapated.
http://www.engineeringtoolbox.com/ga...er-d_1148.html
(Boy- I need to get back to work!! )
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