Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 3
... removed , while if a higher heat is employed the tantalic and niobic acids pass into solution along with the tin and tungsten sulphides when the melt is treated with water . It is therefore apparent that the complete removal of the tin ...
... removed , while if a higher heat is employed the tantalic and niobic acids pass into solution along with the tin and tungsten sulphides when the melt is treated with water . It is therefore apparent that the complete removal of the tin ...
Strona 4
... removed by washing , and as it contained tantalic acid it appeared to consist of what is known as tantalic ochre . The weight of these tantalites was about 30 kilogrms . ( To be continued ) . LECTURE EXPERIMENTS SHOWING THE FORMATION OF ...
... removed by washing , and as it contained tantalic acid it appeared to consist of what is known as tantalic ochre . The weight of these tantalites was about 30 kilogrms . ( To be continued ) . LECTURE EXPERIMENTS SHOWING THE FORMATION OF ...
Strona 6
... removed from the truth . At the request of Professor Rosanoff I then undertook to re - investigate the subject with a view to ascertaining really be relied upon to reduce organic halogens quan- under what conditions , if at all ...
... removed from the truth . At the request of Professor Rosanoff I then undertook to re - investigate the subject with a view to ascertaining really be relied upon to reduce organic halogens quan- under what conditions , if at all ...
Strona 7
... removed with a spray of water , the crucible is put into the permanganate solution . After stirring for a few minutes the solution is gradually acidified with 5 cc . to 20 cc . of dilute sulphuric acid , and the oxidation is allowed to ...
... removed with a spray of water , the crucible is put into the permanganate solution . After stirring for a few minutes the solution is gradually acidified with 5 cc . to 20 cc . of dilute sulphuric acid , and the oxidation is allowed to ...
Strona 8
... removed from the separate portions after aliquoting , and in ( 1 ) and ( 2 ) sodium car- bonate was used instead of ammonium hydroxide and ammonium oxalate for the removal of the iron , aluminium , and calcium . In V. ( 1 ) and ( 2 ) ...
... removed from the separate portions after aliquoting , and in ( 1 ) and ( 2 ) sodium car- bonate was used instead of ammonium hydroxide and ammonium oxalate for the removal of the iron , aluminium , and calcium . In V. ( 1 ) and ( 2 ) ...
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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