Chemical News and Journal of Physical Science, Tom 114Chemical news office., 1916 |
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Strona 3
... washed , dried , and cut into small pieces for analysis . In some cases the fruit also was tested . In such instances it was washed , dried , and ground for analysis . Boron was determined by the use of freshly prepared strips of ...
... washed , dried , and cut into small pieces for analysis . In some cases the fruit also was tested . In such instances it was washed , dried , and ground for analysis . Boron was determined by the use of freshly prepared strips of ...
Strona 4
... washed with water 1916 , xvi , disease while cutting a tooth . It is part of. The starting point in the preparation of normal nonane was castor oil . By distillation this yielded oenanthol ( normal heptyl aldehyde ) , which , after ...
... washed with water 1916 , xvi , disease while cutting a tooth . It is part of. The starting point in the preparation of normal nonane was castor oil . By distillation this yielded oenanthol ( normal heptyl aldehyde ) , which , after ...
Strona 15
... washed precipitate was dried and ignited to thorium oxide in a platinum dish . The residue was then subjected to a prolonged digestion with hot sul- phuric acid . After cooling , the semi - solid mass was poured into cold water and the ...
... washed precipitate was dried and ignited to thorium oxide in a platinum dish . The residue was then subjected to a prolonged digestion with hot sul- phuric acid . After cooling , the semi - solid mass was poured into cold water and the ...
Strona 15
... washed ten times with water con- taining a little colourless ammonium sulphide . Five cc . of sulphuric acid ( 1 : 1 ) were then added and the hydrogen sulphide thus liberated removed by boiling . After cooling to room temperature 25 ...
... washed ten times with water con- taining a little colourless ammonium sulphide . Five cc . of sulphuric acid ( 1 : 1 ) were then added and the hydrogen sulphide thus liberated removed by boiling . After cooling to room temperature 25 ...
Strona 16
... washed , dried , and ignited as before ; then it was dissolved in a quartz dish in hydro- chloric acid which had been distilled through a quartz condenser , and the chloride was at least three times crystallised in quartz dishes by ...
... washed , dried , and ignited as before ; then it was dissolved in a quartz dish in hydro- chloric acid which had been distilled through a quartz condenser , and the chloride was at least three times crystallised in quartz dishes by ...
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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