Chemical News and Journal of Industrial Science, Tomy 127-128Chemical news office., 1923 |
Z wnętrza książki
Wyniki 1 - 5 z 100
Strona 6
... added , and it was then ex- tracted first with ether , next with chloro- form to remove other alkaloids , and thirdly with a mixture of ethyl acetate and ether to extract the morphine . In a case in which both dhatura and opium were ...
... added , and it was then ex- tracted first with ether , next with chloro- form to remove other alkaloids , and thirdly with a mixture of ethyl acetate and ether to extract the morphine . In a case in which both dhatura and opium were ...
Strona 37
... added , and the mixture is stirred . Acetic acid is added , and after a little stirring the olive - coloured mixture becomes green . The Paris green is washed with water , after which it is allowed to settle , and all the water that can ...
... added , and the mixture is stirred . Acetic acid is added , and after a little stirring the olive - coloured mixture becomes green . The Paris green is washed with water , after which it is allowed to settle , and all the water that can ...
Strona 39
... added or subtracted . Thus you get a value for the number of or- bits added to the atom in the compound , and JULY 20 , 1923 . 39 THE CHEMICAL NEWS.
... added or subtracted . Thus you get a value for the number of or- bits added to the atom in the compound , and JULY 20 , 1923 . 39 THE CHEMICAL NEWS.
Strona 40
bits added to the atom in the compound , and by adding this to the atomic number you arrive at what may be called the effec- tive atomic number . The Electronic Theory of Valency . Part II . Intramolecular Ionisation in Organic ...
bits added to the atom in the compound , and by adding this to the atomic number you arrive at what may be called the effec- tive atomic number . The Electronic Theory of Valency . Part II . Intramolecular Ionisation in Organic ...
Strona 54
... added together the result is even , and if an odd number of 3's and 1's be added together the result is odd 54 JULY 27 , 1923 . THE CHEMICAL NEWS .
... added together the result is even , and if an odd number of 3's and 1's be added together the result is odd 54 JULY 27 , 1923 . THE CHEMICAL NEWS .
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acid action addition alcohol amount ANALYTICAL BALANCE appears application arsenic Association atom British carbon carbon tetrachloride carried cent charge chemical Chemistry chloride College colour complete compounds concentrate containing course crystals derivatives determined dyes effect electric electrons elements energy examination exist experiments fact frequency further give given glass heat hydrogen important increase industry Institute interest known laboratory lead less light lines London manufacture mass material matter means ment mercury metal method molecule nature nucleus observed obtained organic oxide period phase physical position possible practical precipitated prepared present properties Published pure quantum radiation reaction regarded relation Research rubber salts separated shown sodium solution spectrum structure sulphuric temperature term theory tion Trade United various weight