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For chemical reactions of the form A + A + M → A2 + M and the reverse A2 + M → A + A + M, there is a range of published rate parameters (ie values to insert into arrhenious and modified arrhenious reactions) for all sorts of elements A. But the published data is restricted to only a few element/molecules M (the bath gas in lab tests) Almost entirely, M in published data seems restricted to N2 and the noble gasses Ar, He, and Xe (Noble gasses are not of course terribly useful). Sometimes, but not always, you see M set to A or A2, which is most useful. Sometimes you see CO2. Is there a usable way to predict approximate rate constants where M is A, A2 or even useful things like O, O2, N, and N2, given rate constants for published values of M? Ratbone 121.215.159.87 ( talk) 15:00, 12 May 2012 (UTC)
What happens if you press the button for the floor, on which the lift is parked with closed doors? -- 84.61.181.19 ( talk) 16:33, 12 May 2012 (UTC)
What happens if you press the button for the floor, on which the lift closes its doors? -- 84.61.181.19 ( talk) 16:36, 12 May 2012 (UTC)
What is the difference between pressing the door open button, and pressing the button for the floor you are currently on? -- 84.61.181.19 ( talk) 16:39, 12 May 2012 (UTC)
What is the difference between old and new lifts in respect of my questions? -- 84.61.181.19 ( talk) 16:42, 12 May 2012 (UTC)
Take a look at File:Mission_control_center.jpg and specifically the map of the earth; there are a bunch of regions on it - I've worked out that SAA is the south atlantic anomaly, and am pretty sure that the biggest ovals are going to be to do with daylight/darkness, but am not sure what the other things are. Google doesn't seem to be of help. The acronyms from West to East, so far as I can make them out (although I encourage you to look at the image) are:
Egg
Centri
c 19:07, 12 May 2012 (UTC)
Mormon cosmology says "Such beliefs were common in the nineteenth century and were even considered to be "scientific fact" by many at the time. For example, William Herschel, the discoverer of the planet Uranus, argued "[w]ho can say that it is not extremely probable, nay beyond doubt, that there must be inhabitants on the Moon of some kind or another?" Furthermore, "he thought it possible that there was a region below the Sun's fiery surface where men might live, and he regarded the existence of life on the Moon as 'an absolute certainty.'"
William Herschel says "Despite his numerous important scientific discoveries, Herschel was not averse to wild speculation. In particular, he believed every planet was inhabited,[16] even the Sun..."
So the first says that it was considered scientific fact by many. The second says that it was a wild speculation. Which is more accurate? And will someone correct one of the articles? Bubba73 You talkin' to me? 19:12, 12 May 2012 (UTC)
Science desk | ||
---|---|---|
< May 11 | << Apr | May | Jun >> | May 13 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
For chemical reactions of the form A + A + M → A2 + M and the reverse A2 + M → A + A + M, there is a range of published rate parameters (ie values to insert into arrhenious and modified arrhenious reactions) for all sorts of elements A. But the published data is restricted to only a few element/molecules M (the bath gas in lab tests) Almost entirely, M in published data seems restricted to N2 and the noble gasses Ar, He, and Xe (Noble gasses are not of course terribly useful). Sometimes, but not always, you see M set to A or A2, which is most useful. Sometimes you see CO2. Is there a usable way to predict approximate rate constants where M is A, A2 or even useful things like O, O2, N, and N2, given rate constants for published values of M? Ratbone 121.215.159.87 ( talk) 15:00, 12 May 2012 (UTC)
What happens if you press the button for the floor, on which the lift is parked with closed doors? -- 84.61.181.19 ( talk) 16:33, 12 May 2012 (UTC)
What happens if you press the button for the floor, on which the lift closes its doors? -- 84.61.181.19 ( talk) 16:36, 12 May 2012 (UTC)
What is the difference between pressing the door open button, and pressing the button for the floor you are currently on? -- 84.61.181.19 ( talk) 16:39, 12 May 2012 (UTC)
What is the difference between old and new lifts in respect of my questions? -- 84.61.181.19 ( talk) 16:42, 12 May 2012 (UTC)
Take a look at File:Mission_control_center.jpg and specifically the map of the earth; there are a bunch of regions on it - I've worked out that SAA is the south atlantic anomaly, and am pretty sure that the biggest ovals are going to be to do with daylight/darkness, but am not sure what the other things are. Google doesn't seem to be of help. The acronyms from West to East, so far as I can make them out (although I encourage you to look at the image) are:
Egg
Centri
c 19:07, 12 May 2012 (UTC)
Mormon cosmology says "Such beliefs were common in the nineteenth century and were even considered to be "scientific fact" by many at the time. For example, William Herschel, the discoverer of the planet Uranus, argued "[w]ho can say that it is not extremely probable, nay beyond doubt, that there must be inhabitants on the Moon of some kind or another?" Furthermore, "he thought it possible that there was a region below the Sun's fiery surface where men might live, and he regarded the existence of life on the Moon as 'an absolute certainty.'"
William Herschel says "Despite his numerous important scientific discoveries, Herschel was not averse to wild speculation. In particular, he believed every planet was inhabited,[16] even the Sun..."
So the first says that it was considered scientific fact by many. The second says that it was a wild speculation. Which is more accurate? And will someone correct one of the articles? Bubba73 You talkin' to me? 19:12, 12 May 2012 (UTC)