is50 c.cm. will be double that when the volume is 100 c.cm., or 87 mm.This is less than the saturation pressure and therefore is the pressurerequired. Again, assuming Boyles Law to hold up to the saturatingpressure, the volume when the pressure is 17-4 is100 x 4-35/17-4 or 25 c.cm. Thus, when the… … 134 HEAT. At 15° C. the pressure is that due to 12-7 mm. ;vapour obeys Charles Law approximately. Thus P_TirefltW>_ 12-7 x (273 + 30) [CH. IXfrom 15° to 30° the 273 + 15= 13-36 mm. *119. Vapours and Gases. Critical temperature. So far, the distinction we have drawn between vapours andgases has…
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