Chemical News and Journal of Industrial Science, Tomy 99-100Chemical news office., 1909 |
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Strona 5
... tube in which a copper oxide com bustion is being conducted , it is found that the oxide actually reduced to metallic copper after the combustion of the volatile matter is completed , rarely extends for more than an inch or two along the ...
... tube in which a copper oxide com bustion is being conducted , it is found that the oxide actually reduced to metallic copper after the combustion of the volatile matter is completed , rarely extends for more than an inch or two along the ...
Strona 6
... tube , and the current of oxygen is passed at a slower rate at the beginning of the combustion . For acetanilide the following percentages were obtained : - Carbon , 7103 , 7124 ; hydrogen , 6.72 , 6.89 , the numbers for the formula CSH ...
... tube , and the current of oxygen is passed at a slower rate at the beginning of the combustion . For acetanilide the following percentages were obtained : - Carbon , 7103 , 7124 ; hydrogen , 6.72 , 6.89 , the numbers for the formula CSH ...
Strona 10
... tube D was opened for a moment , and the back pressure allowed to drive any last traces of air from the tube . After tightly closing the clamp again , the lamps under flasks A and B were removed , while the water in c was still kept ...
... tube D was opened for a moment , and the back pressure allowed to drive any last traces of air from the tube . After tightly closing the clamp again , the lamps under flasks A and B were removed , while the water in c was still kept ...
Strona 15
... tube which pro- jected 7 to 8 inches above the stopper and ended in a capillary was fitted into the neck of the flask , the water being kept boiling continuously . The water was allowed to boil for five minutes longer , when the ...
... tube which pro- jected 7 to 8 inches above the stopper and ended in a capillary was fitted into the neck of the flask , the water being kept boiling continuously . The water was allowed to boil for five minutes longer , when the ...
Strona 45
| duced into the tube to carry off any positive electrification. acids , such as methyl - orange or Congo - red ... tube . A carefully selected length of soda - glass capillary tubing was chosen for this purpose , and a small bulb ...
| duced into the tube to carry off any positive electrification. acids , such as methyl - orange or Congo - red ... tube . A carefully selected length of soda - glass capillary tubing was chosen for this purpose , and a small bulb ...
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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