A college text-book of chemistry . Fio. 29. Fig. 30: or paraffin, according to the boiling-point of the liquid. The bathis heated 30-40° above the boiling-point of the liquid under ex-amination. The air is thus driven out and the balloon is filledwith the vapor. When vapor no longer escapes, the point of thestem is closed by melting it with a mouth blowpipe. The balloonis then cleaned, dried, and weighed. The temperature of the bathand the height of the barometer are observed at the time theballoon is closed. The point of the stem is broken off under mer-cury, when the mercury rises and fills
A college text-book of chemistry . Fio. 29. Fig. 30: or paraffin, according to the boiling-point of the liquid. The bathis heated 30-40° above the boiling-point of the liquid under ex-amination. The air is thus driven out and the balloon is filledwith the vapor. When vapor no longer escapes, the point of thestem is closed by melting it with a mouth blowpipe. The balloonis then cleaned, dried, and weighed. The temperature of the bathand the height of the barometer are observed at the time theballoon is closed. The point of the stem is broken off under mer-cury, when the mercury rises and fills the balloon. By pouringthe mercury out into a graduated cylinder the capacity of theballoon is determined. The specific gravity of the vapor is calcu-lated by the aid of the formula (J5, â B + p) . (1 + . U) . 760 D. v . . hi ii4 COLLEGE CHEMISTRY. in which B = weight of balloon at V and h mm.;Bi = with vapor, at W and hi mm.;v = capacity of the balloon in cubic centimetres ; = weight of 1 cc. air at 0Â
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectchemistry, bookyear19
