A Dictionary of Chemistry and the Allied Branches of Other Sciences, 第 3 巻Longmans, Green, and Company, 1865 |
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according acetate of lead acetic acid action alcoholic solution alkalis alloy ammonia ammonium aqueous solution atomic barium boiling point calcium carbonic anhydride cast iron cent charcoal Chem chloride cold colour colourless compound containing converted cooling copper crystallises crystals decomposed decomposition deposits dilute dissolves distillation ether ethyl evaporated excess ferric chloride ferric oxide ferrous filtered filtrate forms formula furnace gives hippuric acid hydrate hydriodic acid hydrochloric acid hydrogen hydrometer indigo indigo-blue insoluble iodate iodic acid iodide iodine iridium isatin liquid mass melts mercury metallic mixed mixture needles nitrate nitric acid obtained oxidised oxygen peroxide Pharm phosphorus platinum Pogg portion potash potassium powder precipitate prisms produced quantity of heat residue salt separated silica silver slag small quantity sodium soluble in water specific gravity specific heat substance sulphate sulphide sulphuric acid sulphydric temperature tube vapour volume washed weight yellow yields zinc
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132 ページ - ABTU is the amount of heat required to raise the temperature of a pound of water one degree Fahrenheit.
100 ページ - On partially liquefying carbonic acid by pressure alone, and gradually raising at the same time the temperature to 88° Fahr., the surface of demarcation between the liquid and gas became fainter, lost its curvature, and at last disappeared. The space was then occupied by a homogeneous fluid, which exhibited, when the pressure was suddenly diminished or the temperature slightly lowered, a peculiar appearance of moving or flickering striae throughout its entire mass. At temperatures above 88° no...
132 ページ - It is hardly necessary to add, that anything which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance, and it appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited, and communicated in the manner that heat was excited and communicated in these experiments, except it be MOTION.
320 ページ - To obtain ruthenium, scaly osmiridium is heated to bright redness in a porcelain tube, through which a current of air (freed from carbonic acid by passing through potash, and from organic matter by passing through oil of vitriol), is drawn by means of an aspirator. The osmium and ruthenium are thereby...
133 ページ - ... containing water, in the lid of which were two necks, one for the axis to revolve in without touching, the other for the insertion of a thermometer. A similar apparatus, but made of iron, and of smaller size, having six rotatory and eight sets of stationary vanes, was used for the experiments on the friction of mercury.
103 ページ - The first object was obtained by the successive action of two air-pumps; the first having a piston of one inch in diameter, by which the gas to be condensed was forced into the cylinder of the second pump, the diameter of whose piston was only half an inch. The tubes into which the air, thus further condensed, was made to pass, were of green bottle glass, from...
138 ページ - ... infinitely small in comparison with the interval between any two impacts. — 3. That the influence of the molecular forces be infinitely small. When these conditions are not completely fulfilled, the gas partakes more or less of the nature of a liquid, and exhibits certain deviations from Gav-Lussac and Boyle's laws.
82 ページ - The experiment is therefore quite similar to the determination of the specific heat of a substance by the method of mixtures ; the same apparatus may be used and the same precautions require to be taken in the two cases (see pp.
122 ページ - But, although this may be the case, experimental proof that it is so ia «till wanting ; and even if it were afforded here, or for any other particular substance, there would still not be sufficient warrant for assuming as a generally established fact that the cold of decomposition is equal to the heat of combination, independently of the conditions under which these processes respectively occur. In connection with these considerations, it is perhaps worth while to draw attention to the fact that...
488 ページ - Flintshire, £c. ; in the north, Derbyshire, Yorkshire and Cumberland, that is to say, the Brigantian territory ; and it is to this last district that the descriptions apply most correctly. Lead cast in Roman moulds, pigs, in fact, of the age of Hadrian and other emperors, have been found in Flintshire, Derbyshire, Yorkshire, and some other counties. But few ancient mining instruments have ever been found in the lead-bearing districts of...