单词 | gram-molecule |
释义 | > as lemmasgram-molecule gram-molecule n. the quantity of a substance having a mass in grams numerically equal to its molecular weight; so as adjective. ΚΠ 1878 Encycl. Brit. XVI. 621/1 When a chemist speaks of acting on a molecule of succinic acid with two molecules of pentachloride of phosphorus, he means that he mixes them in the proportion of 118 parts of the former to 2 × 177·5 of the latter. For the sake of precision we sometimes speak of a molecule of water (or other substance) in grammes, or even of a gramme-molecule, a grain-molecule, &c. 1894 G. S. Newth Text-bk. Inorg. Chem. i. vii. 56 The number of grammes of a substance, equal to the number which represents its molecular weight, is spoken of as the gramme-molecule. 1958 W. K. Mansfield Elem. Nucl. Physics i. 2 It follows that a gramme-molecule of any substance contains the same number of molecules. < as lemmas |
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