Since natural gas is a mix of various molecular species, chiefly methane but with varying proportions of other gases, a standard cubic foot does not represent a precise unit of mass.
32.
The intensity of the mass-spectrometry peaks is proportional to the isotopic abundances in the molecular species . 12 C 2 H 1 H 3 can also be observed with molecular weight of 17.
33.
The reaction mechanisms underlying the formation of exciplex molecules ( rare gas halides ) are rather complex in which take part ground state atomic and molecular species, ionic species, and excited atomic species.
34.
In parallel with Siegbahn's work, David Turner at Imperial College ( and later at Oxford University ) in the UK developed ultraviolet photoelectron spectroscopy ( UPS ) on molecular species using helium lamps.
35.
The rate of the S N 2 reaction is second order overall due to the reaction being bimolecular ( i . e . there are two molecular species involved in the rate-determining step ).
36.
In the positive mode, the relative proton affinities of the reactant ions and the gaseous analyte molecules allow either proton transfer or adduction of reactant gas ions to produce the ions of the molecular species.
37.
Two new molecular species, predicted using theory, CsFHeO and N ( CH 3 ) 4 FHeO, are derivatives of a metastable FHeO " anion first theorized in 2005 by a group from Taiwan.
38.
The suggested or putative " mixing " of identical molecular species is not in thermodynamic terms a mixing at all, because thermodynamics refers to states specified by state variables, and does not permit an imaginary labelling of particles.
39.
Gaussian 4 ( G4 ) theory is an approach for the calculation of energies of molecular species containing first-row ( Li F ), second-row ( Na Cl ), and third row main group elements.
40.
In lipidomic research, a vast amount of information quantitatively describing the spatial and temporal alterations in the content and composition of different lipid molecular species is accrued after perturbation of a cell through changes in its physiological or pathological state.
