The British Encyclopedia: Or, Dictionary of Arts and Sciences. Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge, 第 5 巻Longman, Hurst, Rees, and Orme, 1809 |
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... receiver commu- nicate with a pneumatic trough . Apply heat to the receiver by means of a sand bath . The first product that passes into the receiver is generally red and fuming ; but the appearances gradually diminish , till the acid ...
... receiver commu- nicate with a pneumatic trough . Apply heat to the receiver by means of a sand bath . The first product that passes into the receiver is generally red and fuming ; but the appearances gradually diminish , till the acid ...
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... receiver as soon as it is filled with red vapours . The nitrous gas will thus be expelled , and the nitric acid will remain in the retort , as limpid and colourless as water . It should be kept in a bottle se- cluded from the light ...
... receiver as soon as it is filled with red vapours . The nitrous gas will thus be expelled , and the nitric acid will remain in the retort , as limpid and colourless as water . It should be kept in a bottle se- cluded from the light ...
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... receiver . " Ores of zinc " may be digested with the nitric acid , and the part that is dissolved boiled to dryness , again dissolved in the acid , and again evaporated . By this means the iron , if any be present , will be rendered ...
... receiver . " Ores of zinc " may be digested with the nitric acid , and the part that is dissolved boiled to dryness , again dissolved in the acid , and again evaporated . By this means the iron , if any be present , will be rendered ...
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... receiver must be used . The particles which are not of sufficient fineness to pass through the interstices of the sieve , may be again powdered . This Elutriation is confined to mineral sub- stances , on which water has no action . It ...
... receiver must be used . The particles which are not of sufficient fineness to pass through the interstices of the sieve , may be again powdered . This Elutriation is confined to mineral sub- stances , on which water has no action . It ...
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... receiver inconvenient , or to bring it too near the furnace . The pas- sage from the body into the neck must be perfectly free and sufficiently wide , other- wise the vapours produced in the retort only circulate in its body without ...
... receiver inconvenient , or to bring it too near the furnace . The pas- sage from the body into the neck must be perfectly free and sufficiently wide , other- wise the vapours produced in the retort only circulate in its body without ...
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