. Stoichiometry . certain the volumesof gas the method of electrical contacts was em-ployed, the mercury as it rose in the volume tubemaking contact successively with each one of aseries of platinum wires fused through the walls ofThe form of the volume tubes employed for gases andliquids is shown in Fig. 4, A and B, Further modifications were required for the determinations athigh temperatures, and a method was devised by which direct read-ings could be taken so long as the pressure did not exceed 1000atmos. The gases examined by Amagat were oxygen, nitrogen, air,hydrogen, carbon dioxide, eth
. Stoichiometry . certain the volumesof gas the method of electrical contacts was em-ployed, the mercury as it rose in the volume tubemaking contact successively with each one of aseries of platinum wires fused through the walls ofThe form of the volume tubes employed for gases andliquids is shown in Fig. 4, A and B, Further modifications were required for the determinations athigh temperatures, and a method was devised by which direct read-ings could be taken so long as the pressure did not exceed 1000atmos. The gases examined by Amagat were oxygen, nitrogen, air,hydrogen, carbon dioxide, ethylene, and methane. In all cases except that of hydrogen the product/z; diminishesat first with rise of pressure, reaches a minimum, and then increasesagain. With hydrogen only the last of these relations was observed,the product pv increasing throughout with rise of pressure; and ^ Fig. the tube. THE PROPERTIES OP GASES 21 ith nitrogen at loo and 200° there was no minimum/z;, though itwas observed at o (Fig. 5).. 1000 2000 3000 Atm P Fig. 5. In the diagram (Fig, 6) the values oS. pv for carbon dioxide up to1000 atmos. are mapped against the pressures at a series of tempera- 20 10 > a.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1918
