A Handbook of Chemical ManipulationJ. Van Voorst, 1857 - 580 páginas |
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Términos y frases comunes
adapted alcohol alkalies allow alluded ammonia analysis aperture apparatus ascertained atomic weight attached balloon baryta becomes blowpipe boiling boiling-point bottle bromine bulb carbonic acid charcoal chemical chemists chloride combustion combustion-tube condensed considerable constructed containing convenient cork crucible crystals cupel cylinder density destructive distillation dilute distillation enable escape evaporation experiments extremely filled filter flame flask fluid funnel furnace gases glass tube grains heat hydrochloric hydrochloric acid hydrogen ignited inches inserted instrument iron laboratory latter liquid manner means mercury metal method millimetres mixture necessary nitric acid nitrogen obtained operation organic oxide oxide of copper oxygen pass piece pipette placed plate platinum porcelain portion potash precipitate pressure prevent purpose quantity removed retort salts screw seen silver soluble solution sometimes specific gravity stopcock substance sufficient sulphuric acid supported surface thermometer tion trough vapour vessel volatile weight wire zinc
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Página 328 - ... cast-iron, exactly represented in figs. 646 and 647 ; while the basin U is fixed on a Fig. 646. plate which can be raised at will along the vertical support ZZ', by means of the toothed rack vw, which works with the toothed pinion o set in motion by the crank B. The ratchet r arrests the toothedracks and consequently keeps the basin U in any given position. A counterpoise affixed to the ratchet facilitates its working, and, as it is turned to one side or the other, the ratchet is thrown in or...