Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 6
... heated over the full brush flame of the blast - lamp , the dish being set at such a height that the sides as well as the bottom are heated to bright redness . As incineration pro- gresses the ash flakes off the sides and drops to the ...
... heated over the full brush flame of the blast - lamp , the dish being set at such a height that the sides as well as the bottom are heated to bright redness . As incineration pro- gresses the ash flakes off the sides and drops to the ...
Strona 8
... heated to boiling over the naked flame , and then immersed in a bath of boiling water . The tube was covered with a watch - glass . Reduction began at once , and about five minutes after the lavender colour characteristic of V2O2 had ...
... heated to boiling over the naked flame , and then immersed in a bath of boiling water . The tube was covered with a watch - glass . Reduction began at once , and about five minutes after the lavender colour characteristic of V2O2 had ...
Strona 13
... heated almost to a red heat , and while it was still hot a current of chlorine was led over it . Titanium and niobium chloride are formed , and can readily be separated from one another , for the former is much more volatile than the ...
... heated almost to a red heat , and while it was still hot a current of chlorine was led over it . Titanium and niobium chloride are formed , and can readily be separated from one another , for the former is much more volatile than the ...
Strona 14
... heated with a long blowpipe flame , so that it touches the edge of the lid , for eight or ten seconds , so that still unchanged nitrate must be present . The whole process is finished in from one to one and a - half minutes . When cold ...
... heated with a long blowpipe flame , so that it touches the edge of the lid , for eight or ten seconds , so that still unchanged nitrate must be present . The whole process is finished in from one to one and a - half minutes . When cold ...
Strona 17
... heated or exposed to direct sunlight , the colour changes and the sensitiveness decreases . After one hour's exposure to bright sunlight the coating of a finished tube had changed in colour from brilliant red to dark chocolate . After ...
... heated or exposed to direct sunlight , the colour changes and the sensitiveness decreases . After one hour's exposure to bright sunlight the coating of a finished tube had changed in colour from brilliant red to dark chocolate . After ...
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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