78 CHEMISTRY. 



Wood air-dried . . 2900 



,, dried at 120 C 3600 



Coal 8300-6400 



Anthracite 8000 



Air-dried peat. . . 3600 



Petroleum 11400 



Turpentine 10662 



Methyl- Alcohol 5307 



Ethyl-alcohol , 7184 



Amyl-alcohol 8959 



Ethyl-ether 9028 



Carbon monoxide , 2403 



Carbon monoxide and hydrogen (equal volumes) 4198 



Methane 13063 



Ethene 11858 



Coal-gas 10600 



Benzene vapour 9915 



Glycerin C 3 H 8 3 5133 



Palmitic acid C 16 H 32 2 9317 



Stearic acid C 18 H 36 2 9717 



(101) MISCELLANEOUS DATA IN CHEMISTRY. 



Mass of a litre of normal hydrogen in grams (crith) .... 0'0896 



,, ,, cubic foot of normal hydrogen in Ibs '005592 



,, , , litre of normal air in grams 1 '2932 



,, ,, cubic foot of normal air in Ibs "080728 



,, 22 '32 litres of normal air in grams 28*872 



Volume in litres of the molecular weight of a gas in 



grams 22'32 



Volume of 1 Ib. of air at 62 F. in cubic feet 13 '141 



Percentage of oxygen in air by volume 20*99 



,, ,, ,, mass 23-19 



,, ,, carbon dioxide in air by volume 0'04 



