This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1817 Excerpt: ...blues to red, and then gradually destroys them. Its specific gravity, according to Davy-s experiments, is 2-22934 If we suppose it composed of a volume of vapour of sulphur, and a volume of oxygen gas, condensed into one volume, its specific gravity ought to be 2-2222. Hence 100 cubic inches of it at the temperature of ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1817 Excerpt: ...blues to red, and then gradually destroys them. Its specific gravity, according to Davy-s experiments, is 2-22934 If we suppose it composed of a volume of vapour of sulphur, and a volume of oxygen gas, condensed into one volume, its specific gravity ought to be 2-2222. Hence 100 cubic inches of it at the temperature of 60, and when the barometer stands at SO inches, will weigh 67-771 grains. Water absorbs S3 times its bulk of this gas, according to my experiments; but according to Theodore de Saussure, that liquid takes up 43-78 times its bulk of it. I ascertained, by experiment, that the quantity of oxygen in sulphurous acid is. -of that in sulphuric acid. Now we shall see immediately that sulphuric acid is composed of 100 sulphur + 150 oxygen. Hence it follows that sulphurous acid is composed of 100 sulphur + 100 oxygen. There is another experiment which demonstrates, in a very satisfactory manner, the composition of this acid. Sulphureted hydrogen is a gas which will be described in the subsequent part of this section. It contains its volume of hydrogen, holding a quantity of sulphur in solution. Now a volume of this gas requires 1-J-volume of oxygen for complete combustion. The substances formed are water and sulphurous acid. The half volume of the oxygen goes to the formation of water, ami combines with the hydrogen. The one volume of oxygen combines with all the sulphur, and forms sulphurous acid. The sulphur, in a-volume of sulphureted hydrogen, is obtained by subtracting the specific gravity of hydrogen gas from that of sulphureted hydrogen. Sp. gravity of sulphureted hydrogen.... 1-180 hydrogen gas 0.069 Sulphur in the gas = 1-111 Ann de Chim. xxiv. 229. f Nicholson-s Journal, vi. 93. J Phil. Trans. 1812, p. 412. Annals of Philoso...
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