Chemical News and Journal of Industrial Science, Volúmenes27-28Chemical news office., 1773 |
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Página 19
... oxygen is absorbed . After a while a rather constant weight is obtained , and , by chemical analysis , the coal is then found to contain oxygen and hydrogen very nearly in the relative proportion in which they combine to water , which ...
... oxygen is absorbed . After a while a rather constant weight is obtained , and , by chemical analysis , the coal is then found to contain oxygen and hydrogen very nearly in the relative proportion in which they combine to water , which ...
Página 26
... oxygen of the air . That is to say , silicon burns first and produces the heat due to its chemical combination with oxygen . The pro- duct of combustion is in its pure state a white solid , infusible , except under the oxyhydrogen ...
... oxygen of the air . That is to say , silicon burns first and produces the heat due to its chemical combination with oxygen . The pro- duct of combustion is in its pure state a white solid , infusible , except under the oxyhydrogen ...
Página 39
... oxygen mixed with air . ( 2 ) . In precisely the same manner the experiments were conducted with pure fused microcosmic salt , and again about 2 to 3 c.c. of unabsorbable gas were re- ceived , which proved to be air . ( 3 ) . 2 to 3 ...
... oxygen mixed with air . ( 2 ) . In precisely the same manner the experiments were conducted with pure fused microcosmic salt , and again about 2 to 3 c.c. of unabsorbable gas were re- ceived , which proved to be air . ( 3 ) . 2 to 3 ...
Página 51
... Oxygen found by loss Per cent . 14'I .. 14'4 20'4 33'0 Nearly , if not quite , all the oxygen contained in this ultramarine is evidently combined with sodium , aluminium , and silicium , forming soda , alumina , and silica , which are ...
... Oxygen found by loss Per cent . 14'I .. 14'4 20'4 33'0 Nearly , if not quite , all the oxygen contained in this ultramarine is evidently combined with sodium , aluminium , and silicium , forming soda , alumina , and silica , which are ...
Página 52
... oxygen eliminated by reduction weighs nearly as much as the nitrogen taken up , or that an equal number of atoms of the oxygen are exchanged for an equal number of atoms of nitrogen . Although the nitrogen has not been esti- mated in ...
... oxygen eliminated by reduction weighs nearly as much as the nitrogen taken up , or that an equal number of atoms of the oxygen are exchanged for an equal number of atoms of nitrogen . Although the nitrogen has not been esti- mated in ...
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Términos y frases comunes
acetic acid action alcohol alkaline alumina ammonia analysis aniline anthracene apparatus appears applied Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour combination composition compounds containing converted copper crystallisation crystals decomposed decomposition deposited dilute dissolved distilled electricity employed ether evaporation experiments filtered flask formation formed formic acid formula furnace fused glass heat hydrate hydrochloric acid hydrogen Improvements insoluble iodide iron Laboratory lime liquid magnesia manganese manufacture matter metallic method methyl mineral mixture nitrate nitric acid nitrogen observed obtained ordinary oxalic oxide oxidising oxygen paper PATENTS phosphate phosphoric acid potash potassa potassium precipitate prepared present produced pure pyrites quantity reaction Royal salt sample silicate silver Society soda sodium soluble solution substance sulphate sulphide sulphuretted hydrogen sulphuric acid temperature tion toluidine treated tube vapour washed yields zinc
Pasajes populares
Página 14 - Others apart sat on a hill retired, In thoughts more elevate, and reasoned high Of Providence, Foreknowledge, Will, and Fate— Fixed fate, free will, foreknowledge absolute — And found no end, in wandering mazes lost.
Página 108 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 5 - Thy Father has written for thee." " Come, wander with me," she said, "Into regions yet untrod; And read what is still unread In the manuscripts of God." And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
Página 170 - By a delicate mathematical analysis, Thomson arrives at the theorem that the ''average pressure at any point of an incompressible, frictionless fluid, originally at rest, but set in motion and kept in motion by solids, moving to and fro, or whirling round in any manner, through a finite space of it," would explain the attractions just described.
Página 144 - London. /Chemical Technology, or Chemistry in its ^-^ Applications to the Arts and Manufactures. By THOMAS RICHARDSON and HENRY WATTS.
Página 96 - Supplement; bringing the Record of Chemical Discovery down to the end of the year 1869 ; including also several Additions to, and Corrections of, former results which have appeared in 1870 and 1871.
Página 253 - ... effect is proportional to the magnetic intensity of the bar multiplied by the current traversing the coil seems to indicate that in this case the effect is produced by the attraction of the magnetic particles by the coil. But then it will be asked why so remarkable an augmentation of the effect is produced by the increase of tension in the case of the soft iron bars. When we are able to answer this question in a satisfactory manner, we shall probably have a much more complete acquaintance with...
Página 73 - Since it appeared that the purest and densest vapour alone gave the greatest number of lines, it became of interest to examine the spectra of compounds consisting of a metal combined with a nonmetallic element. Experiments with chlorides are recorded. It was found in all cases that the difference between the spectrum of the chloride and the spectrum of the metal was that under the same spark-conditions all the short lines were obliterated. Changing the spark-conditions, the final result was that...
Página 224 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.