Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 8
... gave a uranium content of o 1036 grm . , or a positive error of 0'0013 grm . from gravimetric results . The average of a large number of reductions carried on exactly in the way that Kern directs gave a larger positive error than this ...
... gave a uranium content of o 1036 grm . , or a positive error of 0'0013 grm . from gravimetric results . The average of a large number of reductions carried on exactly in the way that Kern directs gave a larger positive error than this ...
Strona 15
... gave no result . The acids form colourless borax glasses which are very difficultly soluble in cold water , and this melt cannot be used for a separation . 6. Fusion with Potassium Cyanide and Caustic Potash . -When niobic or tantalic ...
... gave no result . The acids form colourless borax glasses which are very difficultly soluble in cold water , and this melt cannot be used for a separation . 6. Fusion with Potassium Cyanide and Caustic Potash . -When niobic or tantalic ...
Strona 16
... gave no yellow coloration with hydrogen peroxide . The precipitate when treated with sulphuric acid + hydrogen peroxide gave a distinct yellow coloration , and the filtrate also , more decidedly than the precipitate . The precipitate ...
... gave no yellow coloration with hydrogen peroxide . The precipitate when treated with sulphuric acid + hydrogen peroxide gave a distinct yellow coloration , and the filtrate also , more decidedly than the precipitate . The precipitate ...
Strona 21
... gave 60 5355 grms . of carbon dioxide , hence i grm . of naphthalene gave 3'4361 grms . of carbon dioxide , whence C = 11.999 . Similarly , with cinnamic acid each grm . ought to yield 267459 grms . of carbon dioxide if C 12.000 , but ...
... gave 60 5355 grms . of carbon dioxide , hence i grm . of naphthalene gave 3'4361 grms . of carbon dioxide , whence C = 11.999 . Similarly , with cinnamic acid each grm . ought to yield 267459 grms . of carbon dioxide if C 12.000 , but ...
Strona 27
... gave a distinct blue coloration with litmus . Turmeric - paper was strongly affected , being turned brown . Unfortunately , we had not enough of the crystals to in- vestigate them quantitatively ; by concentrating the solu- tions they ...
... gave a distinct blue coloration with litmus . Turmeric - paper was strongly affected , being turned brown . Unfortunately , we had not enough of the crystals to in- vestigate them quantitatively ; by concentrating the solu- tions they ...
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acetic acid action alcohol alkaline aluminium ammonia ammonium amount analysis apparatus atomic weight B.Sc barium boiling bromide calcium calculated carbon dioxide cent Chem chemical Chemistry chemists chloride colour comet compounds concentrated condensation containing copper crystalline D.Sc decomposed derivatives determination dilute dissolved distilled ether ethyl evaporated excess experiments filter filtrate flask formed formula gives gold grms heated hydrochloric acid hydrogen hydroxide invertase iodide iodine iron J. J. Thomson ketone liquid melting metal method mgrms mineral mixture molecular molecules muriatic niobic nitrate nitric acid obtained oxide oxidised oxygen paper perchloric acid permanganate phosphorus platinum potassium precipitate prepared present Prof pure quantity reaction reduced residue salt sample scandium silver phosphate Society sodium sodium carbonate soluble substance sugar sulphate sulphide sulphuric acid tantalic acid tantalum telluride tellurium temperature theory tion titanic acid titanium tube vanadium vapour washed ytterbium zinc