482 Researches upon the Specific Heat of Elastic Fluids. 



^^^ Specific heat 



' uues. for weights, for volumes. Densities. 



Oxygen 0-2182 02412 1-1056 



Nitrogen 02440 0-2370 09713 



Hydrogen 3-4046 02356 00692 



Chlorine 01214 0-2962 24400 



Bromine 005518 02992 5-39 



On looking through this table, it will at once be seen that the 

 specific heat of oxygen differs but very little from that of an 

 equal volume of either nitrogen or hydrogen ; thus one would be 

 led to infer that the specific heat of simple gases is the same for 

 equal volumes under the same pressure. But for chlorine and 

 bromine numbers have been obtained which are almost equal 

 to each other, but much greater than those which have been ob- 

 tained for other simple gases : — 



Specific heat for 

 Compound gases. equal weights, equal volumes. Densities. 



Protoxide of nitrogen . . . 0*2238 0-3413 1-5250 

 Binoxide of nitrogen . . . 02315 0-2406 1-0390 



Carbonic oxide 0*2479 02399 0-9674 



Carbonic acid 0-2164 0-3308 1-5290 



Sulphuret of carbon . . . 0*1575 0*4146 26325 



Sulphurous acid 0-1553 03489 2-2470 



Hydrochloric acid .... 0-1845 02302 1-2474 

 Hydrosulphuric acid . . . 0-2423 02886 1-1912 

 Ammonia 05080 0-2994 05894 



^'^marst^^^^^ ""^ ^^^^^^^^^ Jo-5929 0-3277 0-5527 



Bicarburet of hydrogen . . 03694 0*3572 0-9672 



Water vapour 0-4750 0-2950 06210 



Alcohol vapour 0-4513 0-7171 1-5890 



^ther vapour 0-4810 1-2296 2*5563 



Chloride of sethyle vapour . . 0*2737 06117 2-2350 



Bromide of sethyle vapour . . 0*1816 0'6777 3-7316 



Sulphuret of sethyle vapour . 0-4005 1*2568 3*1380 



Cyanide of sethyle vapour . . 0*4255 0*8293 1*9021 



Chloroform vapour .... 0-1568 0*8310 5*30 



Dutch liquid vapour . . . 0*2293 0*7911 3*45 



Acetic sether vapour . . . 0*4008 1*2184 30400 



Acetone vapour 0*4125 0-8341 2-0220 



Benzine vapour 0*3.754 1*0114 2*6943 



Turpentine vapour .... 0*5061 2*3776 4*6978 



Chloride of phosphorus vapour 0*1346 0*6386 4*7445 



Chloride of arsenic vapour . 0*1122 0*7013 6*2510 



Chloride of silicium vapour . 0*1329 0*7788 5*86 



Chloride of tin vapour . . . 0*0939 0*8639 9*2 



Chloride of titanium vapour . 0*1263 0*8634 6*8360 



