...accurately measured. The density ie then calculated by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. The apparatus used consists of an iron bath containing mercury, on which a wide glass cylinder (open at...

...ascertained. The specific gravity of the vapour is ascertained by dividing the weight of a known volume by that of an equal volume of air at the same temperature and pressure. The following is the process in detail:—A flask of the capacity of 20 to 35 cubic inches,^. 41, (10 to 18 fluid...

...containing. The specific gravity of the vapour is obtained by dividing the weight of a certain volume by that of an equal volume of air, at the same temperature and pressure. FIG. 80. The process is conducted as follows : a small, clean, and dry glass flask is taken, FIG. 80,...

...compare the weight of a given volume of its vapour at a certain temperature and pressure with the weight of an equal volume of air at the same temperature and pressure. The pressures at which vapour-densities have been taken are various, but, as a rule, have not exceeded...

...compare the weight of a given volume of its vapour at a certain temperature and pressure with the weight of an equal volume of air at the same temperature and pressure. The pressures at which vapour-densities have been taken are various, but, as a rule, have not exceeded...

...measured. It is then easy to calculate its density by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. resting on the sand-bath ; e is an iron spoon, shown separately below, which is nsed to transfer the...

...quantity of liquid, the weight of which has been previously ascertained, is measured. Then the weight of an equal volume of air at the same temperature and pressure is calculated. On dividing the weight of the vapour by that of the air, the density sought for is obtained....

...measured. It is then easy to calculate its density by dividing the weight of the substance by the weight of an equal volume of air at the same temperature and pressure. The apparatus employed consists of a tall, thin, narrow glass jar, a, with a rounded bottom, which rests...

...60° F. Def. The specific gravity of a gas is the ratio of the weight of a given volume of the gas to that of an equal volume of air at the same temperature and pressure. The standard temperature is 60° F., and the pressure is that capable of sustaining 30 inches of mercury....

...W" (weight of air displaced) — W (weight of glass). It only remains now to find by [14] the weight of an equal volume of air at the same temperature and pressure, taking into account, of course, the increased volume of the globe at the high temperature. Representing...