Molecular nitrogen

Gas nitrogen Molecular weight 29 Ratio of specific heats 1.4 Inlet pressure 20 psia Outlet pressure 180 psia Inlet temperature 80°F Weight flow 100 Ib/min... 

Ammonium nitrate, a colorless Ionic solid used as a fertilizer, explodes when it is heated above 300 °C. The products are three gases molecular nitrogen, molecular oxygen, and steam (water vapor). Write a balanced equation for the explosion of ammonium nitrate. 

MOLPSA-nitrogen [Molecular sieve pressure swing adsorption] A version of the PSA process for separating nitrogen from air, developed by Kobe Steel. Most PSA processes for nitrogen use molecular sieve carbon as the adsorbent, but this one uses zeolite X. Water and carbon dioxide are first removed in a two-bed PSA system, and then the nitrogen is concentrated and purified in a three-bed system. 

Nitrogen. Molecular nitrogen N2 has a dissociation energy of 950 kJ/mol, and the N-N triple bond is one of the strongest known chemical bond. Shock-wave experiments disclosed the possibility of N-N dissociation in condensed phases [224, 319-322]. From this an interest arose in the possible obtainment of arrays of N-N single bonds that could form in potentially energetic materials. Ab initio calculations of various kinds [323-327] showed that actually at high pressure... 

When APCI in used in combination with the normal phase LC, the nitrogen molecular ion will enter into a charge-transfer reaction with the organic solvent. Ion-molecule reactions lead to protonated solvent clusters that will react by proton transfer with the analyte molecules, forming [M + H]+ ions. 

All the known tetraalkoxides are very easily hydrolyzed by water vapour and the uranium(IV) compounds oxidize rapidly in air, so their preparation must be carried out under nitrogen. Molecular weight determinations (M = Th, U) indicate a considerable degree of polymerization, approximately tetrameric in the case of Th(OR)4 with R = Pr or MeEtCH, but the molecular complexity decreases to about 3.4 for R = Bu, and with R = CEt3 and CMeEtPr the alkoxides are monomers in boiling benzene.653 The plutonium compound Pu(OCMeEt2)4 is volatile at 150 °C/0.05 torr, suggesting a low molecular complexity. 

A. Becker, N. Akozbek, K. Vijayalakshmi, E. Oral, C. M. Bowden, S. L. Chin, Intensity clamping and re-focusing of intense femtosecond laser pulses in nitrogen molecular gas, Applied Physics B 73, 287 (2001). 

It is generally assumed that a nitrogen molecule occupies 16.4 on the polar silica surface. The adsorbent surface area is then calculated as a product of the total amount of nitrogen in the monolayer (n ) and the nitrogen molecular area (16.4 A ). 

It has been shown that nitrogen occupies a larger area on hydrophobic surfaces than on polar surfaces. The nitrogen molecular area on hydrophobic surfaces is estimated to be between 19 and 22 A [71]. 

Adsorbent surface area is calculated as the product of the monolayer capacity estimated from BET equation and nitrogen molecular area, con,- If the... 

Several important biochemicals are amides, of which proteins and A -acetyl amino sugars are the most abundant in marine organisms, where proteins contribute up to 80%, and amino sugars up to 10% or the total nitrogen. Molecular-level analyses show both these biochemical classes to be present in HMW DON, but only at low concentrations. For most samples, amino acids account for <15-20% of HMW DON, and aminosugars <1 % of the HMW DON (McCarthy et al., 1996 Kaiser and Benner, 2000 Mannino and Harvey, 2000). Either HMW DON amide is derived from some other component, or the analytical protocols used in molecular-level analyses are not appropriate for measuring these biochemicals in HMW DON. 

In the presence of only traces of water, the nitrogen molecular ions enter a series of ion-molecule reactions [57], resulting in protonated water clusters ... 

Atmospheric measurements are also challenging because they must deal with low to extremely low concentrations of trace chemical species. The major components (>99.999%) of the lowest portions of the atmosphere (the troposphere up to 10 km in altitude and the stratosphere between 10 and 50 km) are molecular nitrogen, molecular oxygen, argon, water vapor, and carbon dioxide. Chemists will recognize that all of these species are very stable, strongly bonded molecules or atoms that are essentially inert gases at normal atmospheric temperatures (190-310 K). Indeed, without solar photons to break up selected molecules, atmospheric chemistry would be very dull indeed. 

Step-by-step growth of phosphazene chains can be achieved and the five-phosphorus chain can be converted into a dendrimeric structure. The fascinating chemistry of dendrimeric phosphors-nitrogen molecular architecture has been reviewed. ... 

R.D. Diehl, M.F. Toney, and S.C. Fain, Jr. Orientational Ordering of Nitrogen Molecular Axes for a Commensurate Monolayer Physisorbed on Graphite. Phvs. Rev. 48 177 (1982). 

Ambipolar Diffusion. Estimate the coefficient of ambipolar diffusion in room- temperature atmospheric-pressure nitrogen at electron temperature about 1 e V Compare the coefficient with that for the free diffusion of electrons and nitrogen molecular ions (take ion temperature as room temperature). 

Denitrification is officially defined (see Soil Sci. Soc. Am. Proc., 26 307) as the biological reduction of nitrate or nitrite to gaseous nitrogen (molecular nitrogen or the oxides of nitrogen). ... 

N. Gayathri and B. Bagchi, Subquadratic quantum number dependence and other anomalies of vibrational dephasing in liquid nitrogen molecular dynamics simulation study from the triple point to flic critical point and beyond. Phys. Rev. Lett., 82 (1999), 4851 854. 

As was already suggested in the introduction, once the mechanism as well as the experimental parameters of laser induced multiple photon ionization have been investigated these ions may be used in spectroscopic and ion-molecule interaction studies. For two cases such an application has now been demonstrated in this laboratory by Proch, Trickl and Sha /II,12/. For practical experimental reasons the two diatomic molecules N and CO were chosen to address questions of cold- eam formation and E to E energy transfer. Nitrogen molecular ions N X were made in selected vibrational states by going through the folfowii sequence of excitation steps. 

N (B) Nj(C) - electron impact excitation rate constants of nitrogen molecular emission, N2+(B-X) and N2(C-B) respectively ... 

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