N2 impurity analyzer?
462356
It probably requires a mass spec technique.  Infrared might work.  Your detection level will be the problem.
1112820
Please restate, nitrogen 4 oxide N4O is not a common species or do you mean NO2?  For that go to\n\nhttp://www.epa.gov/ttn/emc/promgate.html
925200
The scientific supply companies like VWR probably have them.\n\nI searched for "oxygen reduction potential electrode" and got a bunch of hits.  Try that.\n\nYou'll also need a meter to attach it to.  Many better pH meters can handle this kind of probe as well.
341491
http://www.webelements.com/webelements/elements/text/He/thdyn.html\n\nhttp://quench-analysis.web.cern.ch/quench-analysis/phd-fs-html/node45.html\n\nhttp://www.public.asu.edu/~jtsasu/Mendelev/thermodynamics/helium.htm
1065220
http://www.itt.edu/staff/boyter/links/index.html#CHEMISTRY_ANALYTICAL
691296
use that at equilibrium : n.p = ni^2\nand from charge neutrality: \n\nn + NA = p + ND
638965
What is "Dry N2 gas?"  My chemistry's a bit rusty, but here's what you might do:\n\nYou take your 40 liters and with the 22C and .956atm, you can determine how many moles of N2 you have.\n\nThen, you take those moles and apply it to whatever "Dry N2 gas" means.  My best guess would be STP.  Then you find the volume at the new temperature and pressure.
836016
Here is a good guide\n\nhttp://dbhs.wvusd.k12.ca.us/webdocs/Stoichiometry/Limiting-Reagent.html
415934
www.google.com  \n"info on nitrogen"
712915
i have not heard of spectroscopy being used to determine the amounts of gases, but i guess you could by looking at how deep the colours are. If the colours are paleish = not alot,etc
724819
To determine the concentration of a reagent.
85778
EMF200 Gauss Meter \nRemote Infrared (IR) Thermometer \nmotion detector
227746
Radiation can be used to measure minute concentrations of a substance (solute) in solution with a device called a scintillation counter.\n\nFirst, you would incorporate a radioactive isotope into the salt.  For example, combining copper(II) nitrate with sodium carbonate labeled with carbon-14, would produce a precipitate of solid copper(II) carbonate labeled with carbon-14 (of a known concentration).  \n\nYou would then isolate the labeled Cu(CO3) and allow it to reach equilibrium with distilled water.  That solution is filtered to remove the remaining solid Cu(CO3).  The water can then be analyzed using scintillation counting to determine how much radioactivity is present.\n\nThe amount of detected radioactivity is proportional to concentration of the dissolved salt.  Using the (presumably known) quantity of carbon-14 in the Cu(CO3), you can calculate the actual concentration of the dissolved salt.
173108
There will be no easy or fast way.  Some options:\n\nhttp://www.analoxusa.com/frame120tb.htm\n\nchemistry.uca.edu/Projects/Quant98/urea-ise-98.pdf \n\nhttp://biocompare.com/newtech/1522/QuantiChrom(tm)-Urea-Assay-Kit.html\n\nwww.springerlink.com/index/X07825U10H247238.pdf
83207
The only thing I can think of is a fullerene cage that is trapping the Neon...hmmm\nIf you were thinking Nitrogen...try any amino acid ...umm adesonine (if thats how its spelt)
402176
You're right, spectroscopy is the proper method...Below you'll find a link to a quick and simple explanation.
609508
Elemental nitrogen (N2) is used as inert gas in laboratories or for protecting iron parts during welding (would react with aluminium during welding, though), or cooled down to a liquid as instant coolant for shock freezing.