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water vapor at zero degrees and 1 atm
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Topic: water vapor at zero degrees and 1 atm (Read 5404 times)
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ajmaferreira
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water vapor at zero degrees and 1 atm
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February 20, 2009, 05:39:52 PM »
Is it possible to have a balloon (or a vessel) whit water vapour at zero degrees and normal pressure?
I'm talking about a meta stable situation or something like that...
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Shiryatsya
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Re: water vapor at zero degrees and 1 atm
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February 23, 2009, 07:50:09 PM »
At zero degrees Kalvin? No that would be the only circumstance where H2O would not have a vapor pressure [but then you wouldn't have a pressure of 1 atm, it is impossible to reach 0K but if you did pressure would have to be equal to zero]. HOWEVER assuming you mean 0* C and and 1 atm (where the solid and liquid states are in equilibrium) there is in fact a vapor pressure. According to this link from Cal Tech
http://www.its.caltech.edu/~atomic/snowcrystals/ice/Vapor2.gif
it's approx 6 mBar
[First post... hope I didn't violate any rules or something]
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water vapor at zero degrees and 1 atm