Chemical News and Journal of Industrial Science, Tomy 105-106Chemical news office., 1912 |
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Strona 1
... gave a list of seventeen lines in the ultra - violet spectrum of boron , their wave - lengths being : - : - 3957'9 2496.81 3941 * 7 2388.5 3829'3 2267'0 3824'5 2266'4 3451 * 31 2088.8 3246'9 2088.4 2689'0 2686.2 2497'7t 2066'2 2064.6 In ...
... gave a list of seventeen lines in the ultra - violet spectrum of boron , their wave - lengths being : - : - 3957'9 2496.81 3941 * 7 2388.5 3829'3 2267'0 3824'5 2266'4 3451 * 31 2088.8 3246'9 2088.4 2689'0 2686.2 2497'7t 2066'2 2064.6 In ...
Strona 2
... gave a spectrum in which no trace of copper lines could be seen , whereas a similar experiment in which melted boron was used in the gold clips showed decided lines of copper and traces of magnesium . Another pair of lines occurred in ...
... gave a spectrum in which no trace of copper lines could be seen , whereas a similar experiment in which melted boron was used in the gold clips showed decided lines of copper and traces of magnesium . Another pair of lines occurred in ...
Strona 3
... gave in the attempts to bring out additional boron lines . A RE - DETERMINATION OF THE DENSITY AND COEFFICIENT OF LINEAR EXPANSION OF ALUMINIUM . * By F. J. BRISLEE , D.Sc. , & c . , Chief Chemist , British Insulated and Helsby Cables ...
... gave in the attempts to bring out additional boron lines . A RE - DETERMINATION OF THE DENSITY AND COEFFICIENT OF LINEAR EXPANSION OF ALUMINIUM . * By F. J. BRISLEE , D.Sc. , & c . , Chief Chemist , British Insulated and Helsby Cables ...
Strona 9
... gave a -6.25 ° , whence [ a ] - 61.66 ° . The strychnine salt crystallises from chloroform and acetone in hair - like needles , melts about 130 ° , and has [ a ] D - 52.6 ° when dissolved in chloroform . The hydrogen phthalate obtained ...
... gave a -6.25 ° , whence [ a ] - 61.66 ° . The strychnine salt crystallises from chloroform and acetone in hair - like needles , melts about 130 ° , and has [ a ] D - 52.6 ° when dissolved in chloroform . The hydrogen phthalate obtained ...
Strona 32
... gave a yellow precipitate , which was sepa- | rated by filtration , washed with alcohol , suspended in alcohol , and treated with hydrogen sulphide . After separation from the lead sulphide the alcoholic solution was allowed to ...
... gave a yellow precipitate , which was sepa- | rated by filtration , washed with alcohol , suspended in alcohol , and treated with hydrogen sulphide . After separation from the lead sulphide the alcoholic solution was allowed to ...
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