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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Dear Frank<o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>So the CO2 > CO is endothermic. </span></b><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Big time.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>But still needs carbon. </span></b><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Or another CO.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>As I see it the only difference is the temperature changing as the gases move around the pot. </span></b><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Gas concentration and temperature change a lot. There may be hot water vapour ions in some regions more than others.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>Wondering if the reading could be affected by temperature? </span></b><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yup.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>Perhaps amount of gas entering the instrument or something? </span></b><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Instrument errors. Processing systematic errors.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:teal'>Interesting. Could hydrogen react with one of the oxygen in CO2 making water leaving CO? <o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yup. At high temperatures lots of things happen.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you can find it. Look for an article in the New Scientist called ‘Up the Starry Chimney’. It discusses the presence in space of very strange carbon radicals that don’t exist here for more than a few microseconds. They were formed and then disbursed and found nothing available with which to react.<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<o:p></o:p></span></b></p></div></body></html>