Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 4
... possible to devise some better way of extracting these bodies from their native compounds , and especially from ordinary columbites and tantalites , so that as far as possible the use of fluorine compounds and the employment of platinum ...
... possible to devise some better way of extracting these bodies from their native compounds , and especially from ordinary columbites and tantalites , so that as far as possible the use of fluorine compounds and the employment of platinum ...
Strona 5
... possible to reduce the dimensions of the com- bustion - tube to such an extent as to secure the advantage of the Dennstedt furnace , which from its lightness of con- struction admits of rapid heating and cooling . This we discovered to ...
... possible to reduce the dimensions of the com- bustion - tube to such an extent as to secure the advantage of the Dennstedt furnace , which from its lightness of con- struction admits of rapid heating and cooling . This we discovered to ...
Strona 8
... possible . The residue was dissolved in about 200 cc . of water , and after heating to boiling , a little ammonium hydroxide and ammonium oxalate were added . The mixture was boiled a minute , settled , filtered , and the precipitate ...
... possible . The residue was dissolved in about 200 cc . of water , and after heating to boiling , a little ammonium hydroxide and ammonium oxalate were added . The mixture was boiled a minute , settled , filtered , and the precipitate ...
Strona 13
... possible to observe accurately not only in the bright regions of the visible spectrum , but throughout the scale from the region of the lithium red line into that commanded by the photographic plate . Two methods have generally been ...
... possible to observe accurately not only in the bright regions of the visible spectrum , but throughout the scale from the region of the lithium red line into that commanded by the photographic plate . Two methods have generally been ...
Strona 19
... possible to prepare dimethylethyl- and dimethyl- propyl - cyclohexenones , only traces of a condensation pro- duct could be isolated from the interaction of chloro- dimethylcyclohexenone and ethyl isopropylmalonate , and the method ...
... possible to prepare dimethylethyl- and dimethyl- propyl - cyclohexenones , only traces of a condensation pro- duct could be isolated from the interaction of chloro- dimethylcyclohexenone and ethyl isopropylmalonate , and the method ...
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acetic action alcohol alkali ammonia ammonium amount analysis antimony apparatus aqueous atomic weight B.Sc Bakelite barium boiling calcium calculated carbon cent Chem chemical Chemistry chloride colour columbite compounds concentration condensation containing copper crucible crystallisation decomposed derivatives determined dilute dioxide dissolved distilled effect electric electrodes electrolytic elements equation ether ethyl evaporated experiments extract filtered flask flour formed formula gases gives graphite grms guncotton heated hydrate hydrochloric acid hydrofluoric acid hydrogen hydroxide investigation iodine iron laboratory liquid metal method mgrm mineral mixture molecular molecules nitrate nitric acid nitrogen nitroglycerin observed obtained ordinary osmotic pressure oxalic oxalic acid oxide oxidised oxygen paper phenol platinum potassium precipitate prepared present Prof pure quantity radio-active radium reaction residue salt scandium shown silver Society sodium soluble solution solvent substance sulphate sulphide sulphuric acid tantalite tantalum tellurium temperature tion tube vapour volume yield