molecular mass. Compare with formula weight and molecular formula. The average mass of a molecule, calculated by summing the atomic weights of atoms in the molecular formula. Note that the words mass and weight are often used interchangeably in chemistry.
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(from the article `centrifuge`) The ultracentrifuge can be used in two principal ways for determining the molecular weights of various proteins. The first consists in carrying out ... ...then osmotic pressure varies with concentration and temperature approximately as it would if the solute were a gas occupying the same volume. This ... ...
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http://www.britannica.com/eb/a-z/m/109
the sum of the atomic weights of all the atoms in a molecule.
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http://www.chemicalglossary.net/definition/1046-Molecular_Weight
The combined weight (as given on the periodic table) of all the elements in a compound.
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http://www.chemicalglossary.net/definition/1140-Molecular_Weight
The mass of one molecule of a nonionic substance in atomic mass units.
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http://www.chemistry-dictionary.com/definition/molecular+weight.php
Molecules are too small to put on a scale, but if you put 6.022 × 1023 of them (60 220 000 000 000 000 000 000, Avogadro's Number) of them on a scale, they will weigh about 2 g (if they are Hydrogen molecules, H2), 128 g (if they are butyl acrylate molecules, C7O2H12) or 10 tonnes (if they are typical molecules of poly(acrylamide)). This number...
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http://www.encyclo.co.uk/local/20046
The mass of one molecule of a nonionic substance in atomic mass units.
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http://www.encyclo.co.uk/local/20728
The sum of the atomic weight of all of the atoms within a molecule. Generally, molecules of the same type have higher boiling points if the molecular weight is higher
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http://www.encyclo.co.uk/local/20747
The sum of the atomic weight's 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: atomic weight. ... Synonym: molecular mass, molecular weight ratio, relative molecular mass. .....
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http://www.encyclo.co.uk/local/20973
the weight of a molecule of a chemical compound as compared with the weight of an atom of carbon-12; it is equal to the sum of the weights of its constituent atoms and is dimensionless. Abbreviated Mol wt or MW. Although widely used, the term is not technically correct; relative molecular mass is preferable.
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http://www.encyclo.co.uk/local/21001
the sum of the atomic weights in a molecule. For example, the molecular weight of water is 18, because the atomic weight of each of the hydrogen molecules is 1 and the atomic weight of oxygen is 16. See mole
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the sum of the atomic weights of all the atoms in a molecule.
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http://www.hach.com/chemGlossary
(mol wt, MW) Type: Term Definitions: 1. 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 (M
r) is the mass relative to the dalton and has no units. Synonyms: molecular mas...
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http://www.medilexicon.com/medicaldictionary.php?t=99798
In chemistry, molecular weight is the sum of the atomic weights of all the atoms in a molecule.
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http://www.probertencyclopaedia.com/browse/GM.HTM
The combined weight (as given on the periodic table) of all the elements in a compound.
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http://www.shodor.org/UNChem/glossary.html
[
n] - (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule
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http://www.webdictionary.co.uk/definition.php?query=molecular%20weight
Weight of the smallest quantity of a substance processing all its normal physical properties.
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
The sum of the atomic weights of all atoms in a molecule. In plastics an average molecular weight is stated.
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https://www.dwplastics.co.uk/glossary/
The combined weight (as given on the periodic table) of all the elements in a compound. In chemistry the words mass and weight are both used interchageably.Atomic and Molecular WeightsClick on an item to paste into clipboard or use clipboard symbol at end to clipboard all values Acetaldehyde 44.05 gmol
-1Clip Actinium 227.0278 gmol
-1...
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relative molecular mass noun (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule
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See relative molecular mass
Found on https://www.encyclo.co.uk/local/21221
(MW) The sum of the atomic weights of all atoms in a molecule.
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the average weight of a molecule of an element or compound measured in units once based on the weight of one hydrogen atom taken as the standard or on the weight of an oxygen atom, but after 1961 based on the weight of the carbon-12 atom; the sum of the atomic weights of all the atoms in a molecule. Abbr.: mol. wt. Also called
Found on https://www.infoplease.com/dictionary/molecular-weight
The sum of the atomic masses of the elements forming the molecule.
Found on https://www.teampti.com/glossary-of-terms/
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