Value of "a" of van der Waals' Equation 189 



Cn 4^. Co to HH O^O CO^J ONCn 4^ Co to H< 



- 



i 



^ D- 



d ft) 

 i-t 



O 





2. 2- 



PPP 2 Q W 2 p op ppp QP 



tn K ffi w t/) B B B B.B Bal" B 



-0 



as o b 



i i i 



CoCoCoCoCoCoCoCoCoCoCoCoCoCoCo 

 CnCnCnCnCnCnCnCnCnCnCnCnCnCnCn 



<! OOVO *-tCo O O OO^O^O"^JCn Cn Co ON 



ON O\4^ ^ O 004^ Cn -^ ON ^J ON ON Co to 



t * *^j ^ ^j to ON **J 4^ *^J ^O Cn Co ^J ON ON 



O O Cn MvOCnCoCnCnCo OOtO^O O*^J 



00*O 



oo->> M 



O 



OJ ON 



to O 



to CO CO I-H 



to 4^. 00 ON to 



toCoCotO^Mt-itO 



ONOOONO ONONO Ki 



s 



O O 



? 



n 



^J 00 ^ - OO^O OOON-^JCn 

 OJ N) O 00 004*. HH Cn 00--J O ON 4 s - 



Co 4* 4^ Cn * M 1-1 



i-i to Co Ki Cn O Co 



^j Cn to Cn O O 



- 00-- - - 



co ^r - .. ., ., 



|| 4^ -^J VO >-- 



Cn ON K) O -" 



Cn 4^. Cn 

 to 



CO 

 Cn 



xx x xxxx 



D O O O ( 

 o o o o 



