gram-molecular weight definition of gram-molecular weight in the Free Online Encyclopedia.

gram-molecular weight, amount of a molecular substance whose weight, in grams, is numerically equal to the molecular weight molecular weight, weight of a molecule of a substance expressed in atomic mass units (amu). The molecular weight may be calculated from the molecular formula of the substance; it is the sum of the atomic weights of the atoms making up the molecule.
..... Click the link for more information. of that substance. For example, one gram-molecular weight of molecular oxygen, O₂ (molecular weight approximately 32), is 32 grams, and one gram-molecular weight of water, H₂O (molecular weight approximately 18) is 18 grams. The term mole mole, in chemistry, a quantity of particles of any type equal to Avogadro's number, or 6.02×10²³ particles. One gram-molecular weight of any molecular substance contains exactly one mole of molecules.
..... Click the link for more information. is often used in place of gram-molecular weight. See gram-atomic weight gram-atomic weight, amount of an atomic substance whose weight, in grams, is numerically equal to the atomic weight of that substance. For example, 1 gram-atomic weight of atomic oxygen, O (atomic weight approximately 16), is 16 grams. See gram-molecular weight .
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