The Chemist: A Monthly Journal of Chemical Philosophy, Volume 11850 |
Vanuit het boek
Resultaten 1-5 van 100
Pagina 3
... sulphuric acid , the natural salt of coffee developes an in- tense violet color and a bronzy pellicle . Hydrochloric acid produces analogous phe- nomena ; under the influence of nitric acid an orange red color is manifested . In ...
... sulphuric acid , the natural salt of coffee developes an in- tense violet color and a bronzy pellicle . Hydrochloric acid produces analogous phe- nomena ; under the influence of nitric acid an orange red color is manifested . In ...
Pagina 20
... ACID is left in either the anhy- drous or hydrated state in the retort , after the foregoing distillation of ... sulphuric acid when the starch is dissolved , and the hot liquid immediately neutralised with carbonate of lime , in a few ...
... ACID is left in either the anhy- drous or hydrated state in the retort , after the foregoing distillation of ... sulphuric acid when the starch is dissolved , and the hot liquid immediately neutralised with carbonate of lime , in a few ...
Pagina 26
... sulphur contained in the seed was not sufficient for the development of the plant . 15. Without sulphuric or phosphoric acid : mineral matters as in experiment 6 , without phosphate and sulphate of lime , and with a supplement of 0.05 ...
... sulphur contained in the seed was not sufficient for the development of the plant . 15. Without sulphuric or phosphoric acid : mineral matters as in experiment 6 , without phosphate and sulphate of lime , and with a supplement of 0.05 ...
Pagina 28
... acids , sulphuric and nitric are necessary to the regular development of the plant ( Experiments 13 and 14 ) ; silicic acid is indispensable . To sum up , the fixed mineral matters ab- solutely necessary for the development of the ...
... acids , sulphuric and nitric are necessary to the regular development of the plant ( Experiments 13 and 14 ) ; silicic acid is indispensable . To sum up , the fixed mineral matters ab- solutely necessary for the development of the ...
Pagina 42
... sulphuric and nitric acids , in different proportions ; but each time the product I obtained was only partially ... acid . I took 200 parts of dry nitre , in very fine powder , and 300 parts of fuming sulphuric acid ; I mixed the two ...
... sulphuric and nitric acids , in different proportions ; but each time the product I obtained was only partially ... acid . I took 200 parts of dry nitre , in very fine powder , and 300 parts of fuming sulphuric acid ; I mixed the two ...
Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
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
Populaire passages
Pagina 356 - ... 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.
Pagina 356 - 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.
Pagina 77 - ... 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.
Pagina 347 - ... 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.
Pagina 321 - 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...
Pagina 356 - ... 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.
Pagina 356 - 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...
Pagina 356 - 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...
Pagina 204 - 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.
Pagina 71 - ... 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...