Chemical News and Journal of Physical Science, Tom 114Chemical news office., 1916 |
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Strona 4
... passing the vapour of the former , to- gether with hydrogen , over freshly reduced nickel at a temperature of 160 ° . ( The exact procedure may be found in an article by Clarke and Biggs , Journ . Am . Chem . Soc . , 1912 , xxxiv . , 59 ) ...
... passing the vapour of the former , to- gether with hydrogen , over freshly reduced nickel at a temperature of 160 ° . ( The exact procedure may be found in an article by Clarke and Biggs , Journ . Am . Chem . Soc . , 1912 , xxxiv . , 59 ) ...
Strona 11
... passed between him and Darwin during the years 1857-1881 . These are given in full with no excisions and only some added notes of explanation . In the second volume accounts are given of Wallace's works and corre- spondence on biology ...
... passed between him and Darwin during the years 1857-1881 . These are given in full with no excisions and only some added notes of explanation . In the second volume accounts are given of Wallace's works and corre- spondence on biology ...
Strona 12
... passed through copper tubes containing spirals of red copper and silver gauze . The latter are at first heated , but during the subsequent process remain incandescent . Acetic aldehyde and paraldehyde are thus formed . These are now ...
... passed through copper tubes containing spirals of red copper and silver gauze . The latter are at first heated , but during the subsequent process remain incandescent . Acetic aldehyde and paraldehyde are thus formed . These are now ...
Strona 20
... passed the first filter . Even if no precipitate is visible this step must not be omitted . The non - appearance of a considerable pre- cipitate of strontium phosphate would of course indicate an insufficient addition of strontium ...
... passed the first filter . Even if no precipitate is visible this step must not be omitted . The non - appearance of a considerable pre- cipitate of strontium phosphate would of course indicate an insufficient addition of strontium ...
Strona 22
... passed over , then the temperature rose to 125 , when a very small quantity of a liquid passed over , but the quantity was too small for exhaustive examination . The residue left in the flask was of a dark brown colour and appeared ...
... passed over , then the temperature rose to 125 , when a very small quantity of a liquid passed over , but the quantity was too small for exhaustive examination . The residue left in the flask was of a dark brown colour and appeared ...
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acetate acetone added aluminium aluminium chloride ammonia ammonium amount analysis antimony apparatus applied B.Sc benzene boiling boron British bromine carbon carotin cent Chem CHEMICAL NEWS Office chemist Chemistry chloric acid College colour commercial compounds concentrated containing copper course crucible D.Sc determined dilute dissolved distillation dyeing Engineering ether ethyl alcohol evaporated experiments extract Farringdon Street ferric chloride filter filtrate flask glass heated hydrochloric acid hydrogen hydrolysis industry insoluble investigation iodide iron Laboratory Lectures London manufacture material metal method mixture monazite Newcastle Street nitrate nitric acid nitrogen obtained organisation oxide paper phosphate physical plant platinum potassium practical precipitate prepared present Price production Prof pure quantity radium reaction reagent residue salt samples scientific silica Society sodium soluble solution starch Students substances sulphate sulphide sulphuric acid Table Technical temperature thorium tion toluene trade Trinitrotoluene tube volume washed weight