The Elements of Inorganic Chemistry

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Longman & Company, 1858 - 216 páginas

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Página 88 - The temperature may be increased by mixing hydrogen and oxygen in the proportion of two volumes of the former to one of the latter, and burning it from a safety jet.
Página 14 - Specific weight, or specific gravity, is the number which expresses the ratio which the weight of a cubic inch of the body bears to the weight of a cubic inch of distilled water at a temperature of 15-5° C.
Página 209 - Brass consists of about 30 parts of zinc and 70 of copper. Copper is sometimes externally converted into brass by exposure, when at a red heat, to the vapour of zinc. The gold wire of Lyons is manufactured from copper bars prepared in this manner. Gun metal consists of 90 parts of copper and 10 of tin. Bell metal contains a larger proportion of tin. Bronze consists of 91 parts of copper, 2 of tin, 6 of zinc, and ] of lead.
Página 43 - On preparing a filter, the piece of paper should be first examined, by looking through it against the light, to ascertain that it is free from holes. The simplest filter is made by folding the paper twice in opposite directions, in such manner as to bring the four corners together, and by opening one corner from the other three, so as to produce an irregular conical cavity. Such a filter being put into a funnel, and then filled with water, will immediately permit its passage : but from the similarity...
Página 123 - ... artificial one is formed by sinking a shaft into the rock-salt, and, if necessary, introducing water. This, when saturated, is pumped up, and evaporated more or less rapidly in large iron pans. As the salt separates, it is removed from the bottom...
Página 41 - When chalk is dissolved in hydrochloric acid, or copper dissolved with nitric acid, we have examples of chemical solution. A liquid can only dissolve a certain quantity of a solid substance. This quantity will vary according to the solid and liquid employed. When the solvent or liquid contains as much of the solid matter as it is capable of dissolving, it is said to be saturated, as all additional quantities of the solid fall to the bottom. The solubility of most substances is increased by an increase...
Página 24 - O3 are symbols of basic salts. It will be noticed, on examining the above symbols, that neutral salts of monobasic acids contain as many equivalents of acid as there are equivalents of oxygen in the base, and neutral salts of bibasic and tribasic acids one half and one third as many, respectively. This rule must be kept in mind when writing the symbols of salts. Compound Radicals. — There is a large class of substances which, although compound, nevertheless act in chemical changes exactly as if...
Página 33 - A cubic inch of water will make a cubic foot of steam ; that is, the water has been expanded by heat to seventeen hundred times its original bulk. The steam is very elastic; the water was not. When we say that a cubic inch of water will form a cubic foot of steam, we mean that it will do so when the steam is allowed to rise naturally from the water .without...
Página 11 - ... of the elements being constant. 2. When any body is capable of uniting with a second in several proportions, these proportions bear a simple relation to each other. 3. If a body. A, unite with other bodies, B, C, D, the quantities of B, C, D...
Página 121 - ... vitriol, in its crystallized state, has the composition CuSO4,5Aq, its molecular weight being 249.4. In this state it forms large blue crystals, which have a nauseous metallic taste, and a density of 2.27. It is soluble in between two and three times its weight of water at the ordinary temperature, and in less than its own weight of boiling water : the solution has a blue color, and a distinctly acid reaction. At a temperature of about 204° C. (400° F.) the salt becomes anhydrous and crumbles...

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