gram-molecular weight

The Columbia Encyclopedia, 6th ed. | 2011 | 448 words | Copyright

gram-molecular weight amount of a molecular substance whose weight, in grams, is numerically equal to the molecular weight of that substance. For example, one gram-molecular weight of molecular oxygen, O ₂ (molecular weight approximately 32), is 32 grams, and one gram-molecular weight of water, H ₂ O (molecular weight approximately 18) is 18 grams. The term mole is often used in place of gram-molecular weight. See gram-atomic weight .

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