Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 7
... boiling point by means of a Bunsen burner , and when the introduction of the sodium is complete boil the solution gently for one hour longer . Taking into account the fact that the four substances used are among the most stable organic ...
... boiling point by means of a Bunsen burner , and when the introduction of the sodium is complete boil the solution gently for one hour longer . Taking into account the fact that the four substances used are among the most stable organic ...
Strona 8
... boiling , a little ammonium hydroxide and ammonium oxalate were added . The mixture was boiled a minute , settled , filtered , and the precipitate was washed with hot water until a drop of the filtrate gave no chlorine reaction . The ...
... boiling , a little ammonium hydroxide and ammonium oxalate were added . The mixture was boiled a minute , settled , filtered , and the precipitate was washed with hot water until a drop of the filtrate gave no chlorine reaction . The ...
Strona 10
... boiling was still proceeding bright polished strips of charcoal iron and steel were slipped into flasks A and B , and the rubber stoppers , which had been previously cleaned by prolonged boiling in pure water , tightly inserted . After ...
... boiling was still proceeding bright polished strips of charcoal iron and steel were slipped into flasks A and B , and the rubber stoppers , which had been previously cleaned by prolonged boiling in pure water , tightly inserted . After ...
Strona 15
... boiling continuously . The water was allowed to boil for five minutes longer , when the capillary was sealed and the stopper coated with paraffin - wax . This flask was left at the ordinary temperature for three weeks , in the course of ...
... boiling continuously . The water was allowed to boil for five minutes longer , when the capillary was sealed and the stopper coated with paraffin - wax . This flask was left at the ordinary temperature for three weeks , in the course of ...
Strona 16
... boil . As soon as | phase of the discussion . flasks A and E have sucked back boiling water so that they are completely filled , the lamps under flasks B and D are also extinguished . When B is quite full , flasks A and B are quickly ...
... boil . As soon as | phase of the discussion . flasks A and E have sucked back boiling water so that they are completely filled , the lamps under flasks B and D are also extinguished . When B is quite full , flasks A and B are quickly ...
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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