Chemical News and Journal of Industrial Science, Tomy 31-32Chemical news office., 1875 |
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Strona 79
... residue adhering to the dish . By means of the rod the skin that first forms over the surface , and would retard evaporation , is broken ; and towards the end of the evaporation , when the residue is in a pasty state , this is broken up ...
... residue adhering to the dish . By means of the rod the skin that first forms over the surface , and would retard evaporation , is broken ; and towards the end of the evaporation , when the residue is in a pasty state , this is broken up ...
Strona 178
... residue , 25'20 per cent ; and this residue contained 57.18 per cent of real anthracen . This shows- 25'2 , containing 57 18 per cent 14'41 anthracen insoluble . soluble . 748 , 19 = 15'72 " " 21 ΟΙ 30.13 Or 1572 soluble in the 60 c.c. ...
... residue , 25'20 per cent ; and this residue contained 57.18 per cent of real anthracen . This shows- 25'2 , containing 57 18 per cent 14'41 anthracen insoluble . soluble . 748 , 19 = 15'72 " " 21 ΟΙ 30.13 Or 1572 soluble in the 60 c.c. ...
Strona 179
... residue which weighed 6 258 grms . , leaving 2.75 grms . dissolved by the alcohol . This bisulphide residue was a brown greasy solid at ordinary temperatures , and completely liquid at 100 ° C. Another alcohol filtrate was taken and ...
... residue which weighed 6 258 grms . , leaving 2.75 grms . dissolved by the alcohol . This bisulphide residue was a brown greasy solid at ordinary temperatures , and completely liquid at 100 ° C. Another alcohol filtrate was taken and ...
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acetic acid action adulterated alcohol aldehyd alkali alum alumina ammonia amount analysis aniline anthracen apparatus applied baryta Bill body boiling calcium carbonic acid cent CHEMICAL Chemistry chemists chloride chromic acid chrysene clause colour compound containing copper crystalline crystals decomposed decomposition dilute dissolved distilled ether evaporation experiments filter gases give glass grms heat hydrate hydrochloric acid hydrogen insoluble iodide iron liquid London magnesia magnet manufacture manure matter mercury metallic method methyl milk mineral mixed mixture nitrate nitric acid nitrogen obtained ordinary oxalate oxide oxygen paper patent phosphate phosphate of lime phosphoric acid plane platinum potash potassium powder precipitate present produced proportion Public Analysts pure pyrites quantity residue salts sample sesquioxide silicates silver Society sodium solid soluble solution substance sugar sulphate sulphide sulphuric acid tartaric tartaric acid temperature tion tube washed weight whilst wine zinc