Value of "a" of van der Waals' Equation 187 



vO 



CO 







ii 







o 



0^ 

 ^ 





10 rj- o '-' O 



(NCNCNCNCNfO 



ON-IOOOOO ON(N-I>-IOOQNO 



u-j TJ- h-i CO 'vh I-" ^ 



to 



CO ^h ON 



, O Q iO 



^B^^^^^^... 





co 



O'OCN 



CN O O 



>-i -H CO O GO (N IO CO I 



CO to O 00 r^OO OO rf M 



to *-O ^^ ^O *-O ^O *-O ^O *O *-O *O *-O ^O ^O ^^ "^~ ^f" to to to 



coco CO CO .CO CO CO CO cOcOcOcOcO cOcOcOcOcOcOcO 



vOO 1 ^- 

 10 ON -i I-H O ON ON 00 



00 



ON 



O 



. , a2s 



oo ooOooo ooooo ooooooo 





-S 



-- 3 





(N CO 



o-- - 

 tilll 



WXHHO 



O O >-> CO "* 



.ff Sl 



ON O -H 



