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" ... that of an equal volume of air at the same temperature and pressure. The standard temperature is 60° F., and the pressure is that capable of sustaining 30 inches of mercury. "
Chemical News and Journal of Industrial Science - Page 155
1865
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Johnson's (revised) Universal Cyclopaedia

1886 - 934 pages
...volume accurately measured. The density ie then calculated by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. The apparatus used consists of an iron bath containing mercury, on which a wide glass cylinder (open at...
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Instructions for the Chemical Analysis of Organic Bodies

Justus Freiherr von Liebig - 1839 - 76 pages
...The specific gravity of the vapour is ascertained by dividing the weight of a known volume by that of an equal volume of air at the same temperature and pressure. The following is the process in detail:—A flask of the capacity of 20 to 35 cubic inches,^. 41, (10 to...
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The Farmer's Dictionary: A Vocabulary of the Technical Terms Recently ...

Daniel Pereira Gardner - 1846 - 898 pages
...weight of an equal bulk of pure water at 62° Fahrenheit. The specific gravity of gases is the ratio to the weight of an equal volume of air at the same temperature. If the solid be lighter than water, the measurement is made more indirectly. How taken. — The specific...
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Hand-book of Organic Analysis: Containing a Detailed Account of the Various ...

Justus Freiherr von Liebig - 1853 - 160 pages
...containing. The specific gravity of the vapour is obtained by dividing the weight of a certain volume by that of an equal volume of air, at the same temperature and pressure. FIG. 80. The process is conducted as follows : a small, clean, and dry glass flask is taken, FIG. 80,...
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The Chemical News and Journal of Physical Science, Volumes 11-12

1865 - 640 pages
...the question, Has the chemical constitution of a vapour anything to do with its rate of expansion ? As is well known, all that we do in making a vapour...pressure. The temperatures at which these determinations have been made are very varied indeed, ranging in general from o°C. to 300° C. ; but in a few instances...
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Elements of chemistry: theoretical and practical, Part 1

William Allen Miller - 1867 - 696 pages
...accurately measured. It is then easy to calculate its density by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. resting on the sand-bath ; e is an iron spoon, shown separately below, which is nsed to transfer the...
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Principles of Chemistry : Founded on Modern Theories

Alfred Naquet - 1868 - 904 pages
...vapour of a quantity of liquid, the weight of which has been previously ascertained, is measured. Then the weight of an equal volume of air at the same temperature and pressure is calculated. On dividing the weight of the vapour by that of the air, the density sought for is obtained....
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Elements of Chemistry: Theoretical and Practical, Volume 1

William Allen Miller - 1872 - 706 pages
...accurately measured. It is then easy to calculate its density by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. The apparatus employed consists of a tall, thin, narrow glass jar, a, with a rounded bottom, which rests...
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Principles of Mechanics

Thomas Minchin Goodeve - 1874 - 336 pages
...Def. The specific gravity of a gas is the ratio of the weight of a given volume of the gas to that of an equal volume of air at the same temperature and pressure. The standard temperature is 60° F., and the pressure is that capable of sustaining 30 inches of mercury....
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Principles of Mechanics

Thomas Minchin Goodeve - 1874 - 340 pages
...Def. The specific gravity of a gas is the ratio of the weight of a given volume of the gas to that of an equal volume of air at the same temperature and pressure. 108. In analysis we represent the density of a substance by the Greek letter p, which stands for the...
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