AZOTIC GAS. 105 



Nitric acid 6-75 



Oxide of silver 14-75 



21-5 



When common salt is fused, it is converted 

 into chloride of sodium, which is composed of 



Chlorine 4*5 

 Sodium 3 



When 7*<5 parts of chloride of sodium are dis- 

 solved in water, they combine with 1-125 of wa- 

 ter, and are converted into muriate of soda, 

 composed of 



Muriatic acid 4-625 

 Soda . 4 



8-625 



These facts being understood, we may pro- 

 ceed to the experiment. I dissolved 21 %5 grains 

 of fused nitrate of silver, and J-5 grains of fused 

 common salt, in separate portions of distilled 

 water, and mixed the solutions. A double de- 

 composition took place ; the muriatic acid and 

 oxide of silver united together, and precipitated 

 in the form of a heavy, white, curdy matter ; 

 while the nitric acid and the soda remained in 

 solution, in the state of nitrate of soda. When 



