GASEOUS BODIES. 

 3. OXYGEN, COMBINED WITH A SIMPLE BASE. 



ATOMIC WEIGHT. SPECIFIC GRAVITY. 



Steam . . . 1-125 0-625 



Carbonic oxide gas . l-?5 0-9722 



Carbonic acid . . 2-75 1-5277 



Protoxide of azote . 2-75 1-5277 



25 Nitric acid vapour . 6-75 3-75 



Sulphurous acid . . 4 22222 



Sulphuric acid vapour . 5 2-7777 



4. OTHER COMPOUND GASES. 



Cyanogen . . . 3-25 1-8055 



Fluoboric acid . . 4-25 2-361*1 



30 Sulphuret of carbon 4-75 2-6388 



Chlorocarbonic acid . 6-25 3-4722 



The specific gravity of these 29 gases and va- 

 pours being obtained by multiplying the atomic 

 weights of each by 0*5555, or half the specific 

 gravity of oxygen, it is obvious, that in all of 

 them a volume may be substituted for an atom ; 

 or, in other words, the specific gravities and ato- 

 mic weights of all of them bear the same relation 

 to each other. In oxygen gas and fluosilicic 

 acid, on the contrary, an atom is represented by 

 half a volume ; so that, in the first set of gases, 

 a volume contains twice as many atoms as in the 

 second set. 



3. There are five compound gases, whose ato- Gases ^ ^ 

 mic weights and specific gravities bear a different cific gravity 



. = atom X 



relation to each other from the gases in the pre- 0-2777. 



Q3 



