Instruction in Chemical Analysis (quantitative.) |
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Page 12
... placed above the centre of gravity of the beam . This is a condition essential to every balance . If the fulcrum were placed in the centre of gravity of the beam , it would not vibrate , but remain in any position in which it is placed ...
... placed above the centre of gravity of the beam . This is a condition essential to every balance . If the fulcrum were placed in the centre of gravity of the beam , it would not vibrate , but remain in any position in which it is placed ...
Page 13
... placed below the line joining the points of suspension , the loading of the scales being gradually increased , will continually tend to raise the centre of gravity of the whole system , so as to bring it nearer and nearer the fulcrum ...
... placed below the line joining the points of suspension , the loading of the scales being gradually increased , will continually tend to raise the centre of gravity of the whole system , so as to bring it nearer and nearer the fulcrum ...
Page 14
... placed upon one side , this certainly would cause the loaded scale to sink , but at the same time being compelled to form constantly a right angle with the beam , it would incline inwards , whilst the other scale would turn outwards ...
... placed upon one side , this certainly would cause the loaded scale to sink , but at the same time being compelled to form constantly a right angle with the beam , it would incline inwards , whilst the other scale would turn outwards ...
Page 15
... placed to turn the more rapidly and completely , the shorter the distance between the centre of gravity and the fulcrum . We have seen above , that in a balance where the three edges are on a level with each other , increased loading of ...
... placed to turn the more rapidly and completely , the shorter the distance between the centre of gravity and the fulcrum . We have seen above , that in a balance where the three edges are on a level with each other , increased loading of ...
Page 16
... placed upon the scales . This is most commonly effected by an arrangement which enables the operator to lift up the beam and thus to remove the fulcrum from its support , whilst the scales remain suspended ; other contrivances fix the ...
... placed upon the scales . This is most commonly effected by an arrangement which enables the operator to lift up the beam and thus to remove the fulcrum from its support , whilst the scales remain suspended ; other contrivances fix the ...
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Instruction in Chemical Analysis (Quantitative.) C Remigius Fresenius,John Lloyd Bullock No preview available - 2015 |
Common terms and phrases
accurate results alumina ammonia amount analysis antimony apparatus arsenic acid barytes beaker-glass bismuth boiling bromine carbonate of ammonia carbonate of soda carbonic acid chloric acid chloride chloride of platinum chloride of silver chromium cobalt completely compound under examination contains converted crucible decomposed decomposition directed sub dissolved evaporation filtrate flask fluid filtered fused gentle heat glass grammes hydrated hydrochloric acid ignition insoluble in water latter likewise lime magnesia manganese mercury metallic method mixed mixture nickel nitrate nitric acid operation organic acids oxalate oxide oxide of chromium oxide of copper oxide of lead oxygen perchloride perfectly peroxide of iron phosphate phosphoric acid Plate porcelain portion powder precipitation as sulphuret proportion protochloride protoxide pure quantitative readily red heat residue rinsing sal ammoniac separation soluble solution strontia subsequently substance sulphate of barytes sulphuretted hydrogen sulphuric acid temperature tion tube vide volatile washed weighed whilst yields very accurate zinc