ATOMIC WEIGHTS. 51 



Parts by weight. Parts by weight. 



32 O 4 combine with 14 N, to form N 46 NitfOUS acid. 



40 Q5 14 N N' 54 Nitric do. 



8 O 36 Cl Cl 44 Protoxide of chlorine. 



320 36 Cl Cl 68 Peroxide of do. 



40 O 5 36 Cl. ... Cl 76 Chloric acid. 



8 O 40 K K 48 Potass. 



8 O 24 Na. . . . Na 32 Soda. 



8 O 20 Ca. . . Ca 28 Lime. 



8 O 8 Si. ... Si 16 Silex, silicic acid. 



8 O 64 Cu. . . . Cu 72 Protoxide of copper. 



16 O 64 Cu. . . . Cu 80 Binoxide of do. 



8 O 200 Hg. . . . Hg 208 Protoxide of mercury. 



16 O 2 200 Hg. ... Hg 216 Binoxide of do. 



8 O 1 10 Ag. ... Ag 1 1 8 Protoxide of silver. 



24 O 3 16 P P 40 Phosphoric acid. 



8 O 28 M M 36 Protoxide of manganese. 



8 O 28 Fe Fe 36 Protoxide of iron. 



24 O 3 56 2 Fe Fe 80 Peroxide of iron. 



8 O 12 Mg. . . . Mg 20 Oxide of magnesia. 



8 O 10 Al. ... Al 18 Alumina. 



24 O 3 12 C. C* 36 Oxalic acid, 



36 Cl 1 H Cl H 37 Hydro chloric acid. 



126 1 1 H 1 H 127 Hydriodic acid. 



16 S 1 H H 17 Sulphuretted hydrogen. 



32 S* 1 H H 33 Bisulphuretted hydrogen. 



6 C 2 H 2 . . . C H 2 8 Light carburetted hyd. 



12 C 2 2 H. , ,C H 14 Olefiant gas. 



12 C* 14 N. ..CN 26 Cyanogen. 



