Chemical News and Journal of Physical Science, Tom 103Chemical news office., 1911 |
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Strona 1
... substance was weighed out in the Erlen- meyer flask , 10 to 15 cc . of the alcohol - benzol mixture added , and the ... substances as the halogen substituted benzols , which belong to the most difficultly reducible class of organic ...
... substance was weighed out in the Erlen- meyer flask , 10 to 15 cc . of the alcohol - benzol mixture added , and the ... substances as the halogen substituted benzols , which belong to the most difficultly reducible class of organic ...
Strona 12
... substance is exposed for a very short time to the action of light a bright phosphorescence of short duration appears , and its spectrum is almost identical with the fluorescence spectrum . If the exposure to the source of light is ...
... substance is exposed for a very short time to the action of light a bright phosphorescence of short duration appears , and its spectrum is almost identical with the fluorescence spectrum . If the exposure to the source of light is ...
Strona 14
... substance in the residues . He showed ( Zeit . Phys . Chem . , ix . , 1908 , 246 ) that mesothorium is not directly converted into radio - thorium , but that a short - lived inter- mediate product , mesothorium II . , results ( half ...
... substance in the residues . He showed ( Zeit . Phys . Chem . , ix . , 1908 , 246 ) that mesothorium is not directly converted into radio - thorium , but that a short - lived inter- mediate product , mesothorium II . , results ( half ...
Strona 19
... substance of the formula- NO2 N- но NO2 N C⚫CH3 CH3 C -N NO2 N NO2 он A further study of the interaction of ... substances . Symmetrically conjugated compounds have been found to exhibit a still more extraordinary anomaly . As an ...
... substance of the formula- NO2 N- но NO2 N C⚫CH3 CH3 C -N NO2 N NO2 он A further study of the interaction of ... substances . Symmetrically conjugated compounds have been found to exhibit a still more extraordinary anomaly . As an ...
Strona 22
... substance . He examined first the products of the emanation or ratio - active gas which diffused out of the thorium compound . This gas , he said , produced an excited activity upon substances which were exposed to its presence , and it ...
... substance . He examined first the products of the emanation or ratio - active gas which diffused out of the thorium compound . This gas , he said , produced an excited activity upon substances which were exposed to its presence , and it ...
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