relative molecular mass


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mass

 [mas]
1. a lump or collection of cohering particles.
2. that characteristic of matter that gives it inertia. Symbol m.
atomic mass atomic weight; see also atomic mass unit.
inner cell mass an internal cluster of cells at the embryonic pole of the blastocyst which develops into the body of the embryo.
lean body mass that part of the body including all its components except neutral storage lipid; in essence, the fat-free mass of the body.
relative molecular mass technically preferable term for molecular weight.

mo·lec·u·lar weight (mol wt, MW),

the sum of the atomic weights of all the atoms constituting a molecule; the mass of a molecule relative to the mass of a standard atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the mass relative to the dalton and has no units.
See also: atomic weight.

mo·lec·u·lar weight

(mŏ-lekyū-lăr wāt)
The sum of the atomic weights of all the atoms constituting a molecule; the mass of a molecule relative to the mass of a standard atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the mass relative to the dalton and has no units.
See also: atomic weight
Synonym(s): molecular weight ratio, relative molecular mass.

mo·lec·u·lar weight

(mol wt, MW) (mŏ-lekyū-lăr wāt)
The sum of the atomic weights of all the atoms constituting a molecule.
Synonym(s): molecular weight ratio, relative molecular mass.
References in periodicals archive ?
Elution times of various proteins analyzed by size- exclusion HPLC in phosphate-buffered saline, pH 7.4, relative to approximate relative molecular mass, as given by Putnam (31).
mass measurements ([m.sub.Sample] and [m.sub.IS]), isotopic composition, and relative molecular mass of CN in the sample (Ab 27 and [M.sub.r] CN), the 27/29 ratio in the enriched internal standard [(27/29).sub.IS], and the 29/27 ratio in a natural sample [(29/27).sub.Sample].
The observed relative molecular mass of the major component [[M.sub.r] = 18 445 (4)] is in excellent agreement with the calculated relative molecular mass of cTnC (calculated [M.sub.r] =18 445), based on its known amino acid sequence and N-terminal acetylation.
According to LC-MS, the relative molecular masses of four main extract components (1-4) were 194, 162, 192 and 190, respectively (Fig.

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