Chemical News and Journal of Industrial Science, Tomy 105-106Chemical news office., 1912 |
Z wnętrza książki
Wyniki 1 - 5 z 99
Strona 14
... removal . Regulation to any desired temperature is easy . The regulator is placed in the bath , which is kept at the desired tempera- ture for a few minutes . The tube D is removed , and an excess of mercury poured in . When the ...
... removal . Regulation to any desired temperature is easy . The regulator is placed in the bath , which is kept at the desired tempera- ture for a few minutes . The tube D is removed , and an excess of mercury poured in . When the ...
Strona 16
... removal of the petroleum ether left a light yellow oily residue . This was saponified with alcoholic potash , the alcohol removed , and the soap dried and extracted with petroleum ether . On evaporation of the petroleum ether the ...
... removal of the petroleum ether left a light yellow oily residue . This was saponified with alcoholic potash , the alcohol removed , and the soap dried and extracted with petroleum ether . On evaporation of the petroleum ether the ...
Strona 33
... removed by evaporation and water added to keep the volume constant , a dark coloured precipitate is formed , which , after filtra- tion , washing , and drying , is a red or brown resinous powder . This procedure was the preliminary ...
... removed by evaporation and water added to keep the volume constant , a dark coloured precipitate is formed , which , after filtra- tion , washing , and drying , is a red or brown resinous powder . This procedure was the preliminary ...
Strona 40
... removed by the recent work of Le Chatelier and Wologdine ( Comptes Rendus , 1908 , cxlvi . , 49 ) . They showed that a number of natural graphites , when freed from mineral matter and air , had practically the same specific gravity , 2 ...
... removed by the recent work of Le Chatelier and Wologdine ( Comptes Rendus , 1908 , cxlvi . , 49 ) . They showed that a number of natural graphites , when freed from mineral matter and air , had practically the same specific gravity , 2 ...
Strona 41
... removal of nearly all the colour from the solution . To the filtrate from this precipitate dilute ammonia was ... removed by filtration and the filtrate concentrated to a small volume . To this solu- tion three volumes of 95 per ...
... removal of nearly all the colour from the solution . To the filtrate from this precipitate dilute ammonia was ... removed by filtration and the filtrate concentrated to a small volume . To this solu- tion three volumes of 95 per ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acetic acid action added alcohol alkali alloys aluminium ammonia ammonium amount analysis apparatus atom B.Sc barium boiling bromine calcium carbon cent cerium Chem chemical Chemistry chemists chloride chromium colour compounds containing copper creatinine crucible crystallises crystals decomposed decomposition described determined dilute dioxide dissolved effect electrolytic erbium ester ether evaporated excess experiments extract ferric filtered filtrate flask formaldehyde formation gives gliadin graphite heat hydrate hydrochloric acid hydrogen hydroxide insoluble iodide iodine iron liquid magnesium magnetic manganese matter melting melting-point mercury metal method methyl mgrm mineral mixture molecular molecules nitrate nitric acid nitrogen obtained organic oxalate oxide oxidised oxygen paper phenol platinum potassium precipitate prepared present Prof quantity radium reaction residue salts samarium samples scandium separated silica Society sodium sodium hydroxide soil soluble solution substance sulphate sulphide sulphuric acid temperature thorium tion tube vanadium washed weight yield yttrium zinc