A device that lets you breathe underwater without the tanks?

[M_Bipartitus]

hmmm...minature fusion reactor... I work for the dept. of Energy... We'll see whaqt they have to say... Sure...

 

[liberato]

...these things that the people put in their mouth and they could breathe underwater while using them...

Just get one of these.

 

[Charlie99]

Just curious how you get O2 from electrolysis of water.

And of course Chlorine gas reacts with water to form Hydrochloric acid and mixed Chlorine oxides, all of which are water soluble, So you may not get any bubbles at the anode.

Various experimenters have reported that if you coat the anode with manganese dioxide you can get O2 generation in the range of 95-99%. Unfortunately, the 1 to 5% chlorine needs to be removed to make it breathable.

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If I were trying to make something about the size of a spare air, but with longer lifetime, I'd be looking at the feasibility of controlled boil off of a small cyrogenic container of liquified O2 and N2.

 

[cmalinowski]

Didn't marine boy chew aqua gum or something like that?

 

[Web Monkey]

Just curious how you get O2 from electrolysis of water.

If you could electrolise pure water I agree it would give you
Energy + 2 x H2O => 2 H2 + O2
but water is a bad conductor so you need to add something.
. . .
Problem is it starts to get a little large.

I said that.

Terry

 

[M_Bipartitus]

"... liquified O2 and N2."


I would like to see a cryogenic dewar of any reasonable capacity that is as small as a spare air...

 

[Kim]

I like the gills idea, seems to work alright for fish.

 

[OWSI176288]

Huh?!? Why didn't anyone tell me about these things. You mean I've been carring these heavy double 108's around on my back for nothing all this time?

 

[emtdan]

Wow, this really is not a serious question!!! That is why we are giving u the wacky answers!!

 

[markfm]

An AL80 is 11.11liters, so something like 0.39ft3 so 677 cubic inches? Say you're willing to use something that's about 1/2" round by 6" cylinder -- 4.7 cubic inches. I don't do gases, but would that mean your 3000 psi AL80 fill would then need to be about 3000x677/4.7 = 432147 psi? I'd love to see the first stage to reduce it, and hauling about the 6 lbs of air in your jaw would be great exercise. Now THAT would be something to see the Tank Killer take a shot at!