The Chemist: A Monthly Journal of Chemical Philosophy, 1. kötet1850 |
Részletek a könyvből
1 - 5 találat összesen 81 találatból.
7. oldal
... zinc at first gives white pre- cipitates , but they are re - dissolved in an excess of the re - agent . The salts of magnesia , alumina , man- ganese , iron , bismuth , chromium , uranium , tin , lead and mercury are precipitated by ...
... zinc at first gives white pre- cipitates , but they are re - dissolved in an excess of the re - agent . The salts of magnesia , alumina , man- ganese , iron , bismuth , chromium , uranium , tin , lead and mercury are precipitated by ...
21. oldal
... zinc , iron , caustic lime and rosin , a mixture of caustic lime with charcoal , and charcoal alone , found the last mentioned the surest , simplest , and most economical . Two parts of chloride of silver and one of damp powdered ...
... zinc , iron , caustic lime and rosin , a mixture of caustic lime with charcoal , and charcoal alone , found the last mentioned the surest , simplest , and most economical . Two parts of chloride of silver and one of damp powdered ...
53. oldal
... zinc to the plate of gold , the platinum is still negative ; but if , instead of establishing the communication with a metallic arc , it be made with the fingers moistened , we have inverted effects . According to De la Rive , platinum ...
... zinc to the plate of gold , the platinum is still negative ; but if , instead of establishing the communication with a metallic arc , it be made with the fingers moistened , we have inverted effects . According to De la Rive , platinum ...
72. oldal
... zinc . zinc prevents the ores from being treated in the usual manner for reducing the other metals . The patentee roasts such ores in the first instance ( after reducing them to The powder ) , maintaining them for some time at a 72 ...
... zinc . zinc prevents the ores from being treated in the usual manner for reducing the other metals . The patentee roasts such ores in the first instance ( after reducing them to The powder ) , maintaining them for some time at a 72 ...
73. oldal
... zinc is converted into sulphate and oxide of zinc , the former of which is separated by lixiviation , the latter by means of sulphuric or hydrochloric acid . The third improvement is in forming stannates of soda and potassa by roasting ...
... zinc is converted into sulphate and oxide of zinc , the former of which is separated by lixiviation , the latter by means of sulphuric or hydrochloric acid . The third improvement is in forming stannates of soda and potassa by roasting ...
Más kiadások - Összes megtekintése
Gyakori szavak és kifejezések
according action added alcohol alkali ammonia amount analysis animal appears applied becomes bodies boiling called carbonate cause cent charcoal chemical chloride color combination completely composition compound considerable consists contained copper crystals determined dissolved distilled dried effects electricity employed ether evaporation examined exist experiments extract fact filtered gave give glass gold grammes heat hydrogen important iron known lead leaves less light lime liquid liquor manner matter means metallic mixed mixture nature nitrate nitric acid nitrogen observed obtained operation organic oxide oxygen passed phosphate plants portion potassa precipitate prepared present produced properties proportion proved pure quantity remains removed salt separated silver soda soluble solution substances sufficient sugar sulphate sulphuric acid supply surface temperature tion treated vegetable washed weight zinc
Népszerű szakaszok
356. oldal - ... view of this vast collection will produce upon the spectator will be that of deep thankfulness to the Almighty for the blessings which he has bestowed upon us already here below, and the second, the conviction that they can only be realized in proportion to the help which we are prepared to render to each other, therefore only by peace, love and ready assistance not only between individuals but between the Nations of the Earth.
356. oldal - The products of all quarters of the globe are placed at our disposal, and we have only to choose which is the best and the cheapest for our purposes, and the powers of production are entrusted to the stimulus of competition and capital.
77. oldal - ... put the mucky liquid to stand, so that they may, after it has rested for a day or two, skim the fluid from the solid particles of filth, pollution, and disease.
347. oldal - ... and liberates the oxygen in its gaseous state to sustain the healthy functions of the animal life, at the same time that it feeds on the rejected matter which has fulfilled its purposes in the nourishment of the fish and snail, and preserves the water constantly in a clean and healthy condition.
321. oldal - When one pound of lean beef, free of fat, and separated from the bones, in the finely chopped state in which it is used for beef sausages or mincemeat, is uniformly mixed with its own weight of cold water, slowly heated to boiling, and the...
356. oldal - ... we are living at a period of most wonderful transition, which tends rapidly to the accomplishment of that great end to which, indeed, all history points — the realization of the unity of mankind.
356. oldal - Not a unity which breaks down the limits, and levels the peculiar characteristics of the different nations of the earth, but rather a unity the result and product of those very national varieties and antagonistic qualities. The distances which separated the different nations and parts of the globe are...
356. oldal - Whilst formerly the greatest mental energies strove at universal knowledge, and that knowledge was confined to the few, now they are directed on specialities, and in these, again, even to the minutest points...
204. oldal - It was further shown that chemical decompositions may be produced by liquid diffusion ; the constituents of a double salt of so much stability as common alum being separated, and the sulphate of potash diffusing in the largest proportion. In fact the diffusive force is one of great energy, and quite as capable of breaking up compounds as the unequal volatility of their constituents.
71. oldal - ... at a high temperature, and recasting several times to give a great many tints, varying from blue to pink, red, opaque yellow, and green. Charcoal in excess in a mixture of silica-alkaline glass gives a yellow colour, which is not so bright as the yellow from silver, — and this yellow colour may be turned to a dark red by a second fire. The author is disposed to refer these chromatic changes to some modifications of the composing particles rather than to any chemical changes in the materials...