Chemical News and Journal of Physical Science, Tom 103Chemical news office., 1911 |
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Strona 18
... melting- or eutectic - points respectively . Chloral hydrate was also studied . In dealing with a compound , the molecular weight is given , according to Traube , by M = p ( 2 atomic volumes + co - volume ) , whereas if the calculation ...
... melting- or eutectic - points respectively . Chloral hydrate was also studied . In dealing with a compound , the molecular weight is given , according to Traube , by M = p ( 2 atomic volumes + co - volume ) , whereas if the calculation ...
Strona 25
... melting- and freezing - points of a number of metals on the temperature scale defined by the platinum resistance thermometer calibrated in ice , steam , and sulphur vapour ( 444 70 ° on the constant volume nitrogen thermometer ) . In ...
... melting- and freezing - points of a number of metals on the temperature scale defined by the platinum resistance thermometer calibrated in ice , steam , and sulphur vapour ( 444 70 ° on the constant volume nitrogen thermometer ) . In ...
Strona 28
... melt should be kept in quiet melt is transferred ( after cooling quickly by giving the fusion over as low a flame as possible for one hour . The the melt to cling to the sides instead of forming a solid cake crucible a gyratory motion ...
... melt should be kept in quiet melt is transferred ( after cooling quickly by giving the fusion over as low a flame as possible for one hour . The the melt to cling to the sides instead of forming a solid cake crucible a gyratory motion ...
Strona 29
... melting - points - the stannic oxide remains undissolved , and a fusion of the residue with sulphur and sodium carbonate may be necessary . Treatment with H2S . - The solution containing at least 30 cc . double normal hydrochloric acid ...
... melting - points - the stannic oxide remains undissolved , and a fusion of the residue with sulphur and sodium carbonate may be necessary . Treatment with H2S . - The solution containing at least 30 cc . double normal hydrochloric acid ...
Strona 30
... melt is heated in a 250 cc . round bottomed flask almost to boiling , and dry precipitated calcium carbonate is added in moderate excess . The solution is boiled in the flask after it has been connected with a 6 - inch worm reflux ...
... melt is heated in a 250 cc . round bottomed flask almost to boiling , and dry precipitated calcium carbonate is added in moderate excess . The solution is boiled in the flask after it has been connected with a 6 - inch worm reflux ...
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