molecular weight

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molecular weight

n.
The sum of the atomic weights of all the atoms in a molecule. Also called relative molecular mass.

molecular weight

n
(Chemistry) the former name for relative molecular mass

molec′ular weight′


n.
the average weight of a molecule of an element or compound measured in units based on 1/12 the weight of the carbon-12 atom; the sum of the atomic weights of all the atoms in a molecule. Abbr.: mol. wt.
[1875–80]

molecular weight

The sum of the atomic weights of the atoms contained in a molecule. For example, since the atomic weight of hydrogen is 1 and the atomic weight of oxygen is 16, the molecular weight of water (H2O) is 1 + 1 + 16, or 18.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.molecular weight - (chemistry) the sum of the relative atomic masses of the constituent atoms of a moleculemolecular weight - (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule
mass - the property of a body that causes it to have weight in a gravitational field
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
Translations
References in periodicals archive ?
In particular, for high-performance structural PES-toughened epoxies, the specific influence of TP end groups at identical chemistry and molar mass has, to the best of our knowledge, not yet been analyzed in depth.
In general, the solubility of lignin moiety is defined by the chemical structure, namely, molar mass, number of functional groups, and content of impurities (e.g., carbohydrates) (Brodin et al.
If one considers that n = M/M, (where M is the total mass and M corresponds to the molar mass) and that the mean density, [[rho].sub.0], can be expressed as [[rho].sub.0] = M/V, then the ideal gas law takes the following form:
Figure 1 shows three different PE resins that, in spite of having the same Melt Index, have completely different Molar Mass Distribution (MMD), and thus completely different performance and processing behavior.
Students collect their data and work through a series of mathematical manipulations to determine the molar mass of air and exhaled air, the moles and density of each gas in air and exhaled air.
The smaller the initial molar mass of PHB the lower will be its thermal stability and the faster will be its degradation [8].
(2012), who concluded that one of the factors that influence in removal efficiency of pesticides by nanofiltration membranes is the molar mass and other factors such as the pore size of the membrane, the space between the polymer chains or polymer constituents of membranes.
where [micro] (Pa x s or kg/(m x s)) is the kinetic viscosity of gas, P (Pa) is the pressure, and M (kg/mol) is the molar mass. Relevant parameters of material IG-110 and BC, which are acquired by mercury intrusion porosimetry (MIP), are shown in Table 2.
Caption: Figure 2: Molar mass distribution of the water extractable pectins of the apple chips dried by hot air drying (AD), medium- and short-wave infrared drying (IR), instant controlled pressure drop drying (DIC), and vacuum freeze drying (FD).
Molar mass distribution of the PLGA copolymer was verified by a high-performance liquid chromatography (GPC) Viscotek VE 2001 coupled to the Viscotek Detector TDA 302, Houston, Texas, USA (2008).