 CO2 H2O Phase Diagram
What Is Sublimation i think this is a nice simple explanation ot the MANY facets of what it is and what it does http://naturalsciences.sdsu.edu/ta/classes/lab5/sublimation.
htm what Temperature does CO2 Sublimate.. that depends on a number of factors see CO2 Phase DIagram http://www.lpi.usra.edu/meetings/lpsc2004/pdf/1857.pdf 0 ������°C corresponding to 273.15 kelvins, approximately the melting point of water under ordinary conditions. Kelvin conversion chart -30 degree Celsius = 243.15 kelvin -80 degree Celsius = 193.15 kelvin Atmospheric Pressure mb 6-8.5 mb http://mars.jpl.nasa.gov/MPF/science/pressure_movie.html At what Temperature would CO2 Freeze on Martian atmosphere at 8.5MBars? dvdman_2516: I believe it's around -120 C, just a guess though. dvdman_2516: Okay, so you want me to look up the freezing point of CO2 at 8.5 mb? dvdman_2516: Well, it's easy to find the value at STP. Not so easy for 8.5 mb. eagle_averro_07: Well as an Atmospheric Specialist that IS hat you are supposed to do...right dv? dvdman_2516: Look things up for you eagle? Not really. :P danascullymdfbi: who is an atmospheric specialist?dvdman_2516: I am, dana. dvdman_2516: eagle, extrapolating from the phase diagram, I'd say about 150 Kelvins. dvdman_2516: Close to -120C. eagle_averro_07: lool accurate numbers dv.. you will be "read" starman280z: ��� Vice you dont have a pot to piss in loser eagle_averro_07: no i say closser to Minus 130 so when does MARS get that COld? lip.schtick: dvd thats what vice said 10 minutes ago dvdman_2516: At the poles in Winter, it certainly does. dvdman_2516: Are you questioning whether CO2 exists on Mars? eagle_averro_07: Pardon?? i thought the COLDEST on Mars as Minus 87 eagle_averro_07: so dv??lip.schtick: ok starman280z: ��� Maybe Green will take you in..I know your his bf Vice dvdman_2516: eagle, what is your point? eagle_averro_07: dv... what is the LOWEST temp on Mars? eagle_averro_07: hope dv..is getting Accurate DATA ;)silverxcharms: e bye lip dvdman_2516: I am looking.eagle_averro_07: am waiting eagle_averro_07: and what HAS been said is on the Photo eagle_averro_07: what Temp on MARS would CO2 sublimate? dvdman_2516: And the minimum polar temperature is near -140C to - 143C. eagle_averro_07: Minimum/Maximum Surface Temperature Metric: -87 to -5 ���°C http://solarsystem.nasa.gov/planets/profile.cfm?Object=Mars&
amp;Display=Facts is that NASA web site inaccurate dv? A Day Later: dvdman_2516: A quick lesson for eagle: CO2 sublimates at -128C at Mars temp and pressure, and temperatures as low as -143C have been observed at the poles. SO who would like to tell DV and anyone else interested that when different Gases are mixed with CO2 at 8.5mBars, then the Freezing temperature ALSO changes? Atmospheric Constituents Carbon Dioxide, Nitrogen, Argon Scientific Notation: CO2, N2, Ar http://solarsystem.nasa.gov/planets/profile.cfm?Object=Mars&
amp;Display=Facts After a difficult time delivering soil samples to one of the ovens onboard Phoenix, the results are now in from the first round of baking: no water, yet. http://www.astronomynow.com/080617FirstresultsfromPhoenixbak
ery.html For "Logic" in the " Scientific Method" read this BLOG ;) http://phoenix.lpl.arizona.edu/blogsPost.php?bID=211 The final nail in the coffin on the salt theory was when we looked in the trench after a few days and some of the chunks were gone. They must have s u b l i m a t e d, or gone from a solid to gaseous state without becoming liquid, to have disappeared. Salts do not do that
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