Chemical News and Journal of Industrial Science, Tomy 5-6Chemical news office., 1862 |
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Strona 87
... remains dissolved . Water precipitates it , together with finely - divided gold ; but it dissolves again when heated with concentrated hydrochloric acid , water being afterwards added . The gold remains per- fectly pure . When the gold ...
... remains dissolved . Water precipitates it , together with finely - divided gold ; but it dissolves again when heated with concentrated hydrochloric acid , water being afterwards added . The gold remains per- fectly pure . When the gold ...
Strona 211
... remains undissolved at the bottom of the vessel , and thus cause the whole process to fail . I have prepared six or seven pounds of nitrate of ethyl in this way with very little trouble . In acting upon the nitrate of ethyl with ammonia ...
... remains undissolved at the bottom of the vessel , and thus cause the whole process to fail . I have prepared six or seven pounds of nitrate of ethyl in this way with very little trouble . In acting upon the nitrate of ethyl with ammonia ...
Strona 211
... remains , I am somewhat surprised to find he arrives at the conclusion that death was caused by a poisonous dose of phosphorus . There is nothing I can gather from the results Mr. Hoffman says he obtained in his investigation that ...
... remains , I am somewhat surprised to find he arrives at the conclusion that death was caused by a poisonous dose of phosphorus . There is nothing I can gather from the results Mr. Hoffman says he obtained in his investigation that ...
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acetic acetic acid action alcohol alkaline alumina ammonia analysis aniline apparatus appears atmosphere beautiful blue body boiling bromine brown carbonic acid cent charcoal chemical Chemistry chemists chloride coal colouring matter composition compound containing copper crystallised crystals dilute dissolved distilled electric employed Ether sol ethylamine evaporated experiments filter flame flask gases glass grains grammes heat hydrochloric acid hydrogen Improvements insoluble iodine iron lecture light lime lines liquid London manufacture metal method mineral minutes mixed mixture nitrate nitric acid nitrogen observed obtained oxalic oxalic acid oxide oxygen paper passed phosphoric acid plants platinum portion potash potassium precipitate prepared present prism produced Professor proportion pure rays reaction residue rubidium salt silica silver soda sodium soil soluble solution specimens spectra spectrum strychnia substance sulphate sulphide sulphuric acid surface tartaric acid temperature thallium tion tube vapour yellow zinc