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How to fill a co2 bottle?

Dark Warrior

www.paintballscene.co.uk
Nov 28, 2002
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Action - Vapour CO2 leaving bottle at rapid pace
Re-Action 1 - Pressure decrease within bottle
Re-Action 2 - Liquid Co2 in bottle returns to its gaseous state due to decreased pressure
Re-Action 3 - Bottle temperature decreases rapidly due to suround heat being absorbed by the "Change of State"


It's fun is this.
 

QuackingPlums

Go get a wee-mee!
Oct 30, 2002
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Ok, i can see you're evidently having fun with this, but look up "chemical reaction" anywhere u like - it's the process of one or more substances acting on each other and being changed into something different. Elements combining to make new compounds. You can argue all u like, but gas being let out of a bottle is NOT a chemical reaction, it's a phase change. :D

The PROCESS of liquid turning into a gas is just that - a process.
The PROCESS of gas expanding is just that - a process.
There is no chemical reaction taking place in my fridge (except where the cheese is going mouldy), my air conditioner or when I open a can of coke.

The "action" of gas escaping at rapid pace is not part of a chemical reaction.
In Newtonian physics you might talk of that creating thrust and the equal & opposite reaction would push the bottle back, but that's a whole new branch of science, and we've gone off-topic enough already :D


Richard, you're a chemist... tell him! :rolleyes: :p
 

JoseDominguez

New cut and carved spine!
Oct 25, 2002
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Changes of state e.g. evaporation, condensation, sublimation etc... are not reactions in any sense (either chemical or physical) they are simple a function of pressure and temperature. I am a science teacher, I do it for a living. So stop arguing.
Ian B. Biomed. BSc. P.G.C.E. T.W.A.T (honours in the last one).
he he
merry christmas.
Damnit, thinking on a Sunday.
 

L J

big big titties
for it to be a REACTION the CO2 would have to REACT with something in the air(ie lose or gain electrons etc) and become a different compound like carbon monoxide etc.....changing the actual molecualr structure....not changging from liquid to gas....science lessons all over again......the processes are....
1. solid - liquid - gas = melting - boiling
2.gas - liquid - solid = condensation - freezing

these are all processes...check in a scinece book and it will tell you..

the frosting occurs how plums said....just like how fridges..especially camping fridges work...this is why on a camping fridge there is a flame...the gas is being burnt on which in turn means becuase gas i ecaping the bottle is being chilled which chills the fridge:eek: :eek:
 

Dark Warrior

www.paintballscene.co.uk
Nov 28, 2002
6,190
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So you are a science teacher!!
So why do you "BOFFINS" call it an Endothermic (or Exothermic) "REACTION" if it's not a reaction.
Sounds like one of those typical teacher thing
Try to confuse the ell out of their students