﻿138 M. C. Marignac on the Specific Heats, Densities, 



The calorimeter used was the glass vessel equivalent to 14*9 

 grammes of water. The quantity of water was 170 grms. for 

 each experiment. The heated thermometer was immersed at a 

 temperature T = 65°*10. I denote by t and t' the initial and 



tempera 



cures oi me c 



aionmeie 



ir, ana Dy r i 



cne ratio - f — - 





Water, 170 grammes. 





t. 



t'. 



t'-t. 



T-t'. 



r. 



19-78 



23-26 



3-48 



41-84 



12-023 



19-86 



23-35 



3-49 



41-75 



11-963 



2006 



23-53 



347 



41-57 



11-980 



20-12 



23-57 



3-45 



41-53 



12-037 



19-80 



23-28 



3-48 



41-82 



12017 



19-69 



23-18 



3-49 



41-92 



12011 



20-04 



23-505 



3-465 



41-595 



12-004 



1991 



23-385 



3-475 



41-715 



12-004 



The mean of all the above values of r is =1 2*005. The calo- 

 rimeter and the contained water being equivalent to 183 grms. 

 of water, 15*402 grms. are deducted as the equivalent of the 

 heated thermometer. 



HCl+50Aq, 182 grms. 



t. t'. t'-t. T-t'. r. 



19*92 23*40 3-48 41*70 11-983 



20-01 23-49 3-48 41-61 11*957 



20*10 23-57 3-47 4153 11-968 



2008 23-54 3-46 41-56 12*011 



1992 23*39 347 41-71 12020 



1992 23-38 3*46 41*72 12*057 



Mean . . . 12-000 



We have, therefore, for the specific heat of this solution : — 



c= 15- 4 Q3X 8 y-14-9 =0 , 9336- 



HCl + 100Aq, 176 grms. 



t. t'. t'-t. T-t'. r. 



19*81 23-29 3*48 41*81 12-014 



19-73 23-22 3-49 41*88 12-000 



1992 23-40 3-48 41*70 11-983 



19-98 23-45 3-47 41 65 12003 



20-02 23-495 3-475 41605 11973 



Mean . . . 11995 

 c= 15-402 x 11-995-149 =0 . 965a 



