

W. G. Mixter- 



iiiute 



s. Temperature 







16-140 



1 



36-141 



2 



16-142 



4 



18-049 



5 



18-050 



6 



18-043 



7 



18-036 



8 



18-029 



-Ileat of Comhustion of Hydrogen. 225 



Temperattire interval. 

 18-050 — 16-142 + 0-014 = 1-922° 



Heat observed, 1633-3 Xl-922 = 3139-2<' 

 Correction to calorie at 20° 1-9*^ 



Q=3404r 



3141-1* 



Experiment 7^.— Hydrogen, 1110-7" at 15-9° and 767*25^ 



calculated weight 0-09519, observed 0-0953 gram, 

 water equivalent of calorimeter, 1683-3 grams. 



Minutes. Temperature. 



15-771 



1 15-776 



Water and 



Temperature interval. 

 17-656 — 15-78+0-008: 



1-884' 



2 



15-780 



4 



17-616 



5 



17-656 



6 



17-656 



7 



17-653 



8 



17-651 



9 



17-648 



10 



17-645 



Heat observed, 1683-3 Xl"^ 

 Correction to calorie at 20* 



Q = 33945< 



;4 = 3l7i-3' 

 2-6' 



3173-9^ 



Experiment i^.— Hydrogen, 1111-1" at 20-1° and 754*15'""^ ; 

 calculated weight 0-09227, observed 0-0924 gram. Water and 

 water equivalent of calorimeter, 1731-2 grams. 



Minutes. Temperature. 



16-410 



1 16-416 

 Heat observed, 1731-2 x 1 •786 = 3091-9° 

 Correction to calorie at 20° 1-5° 



Temperature interval. 



18-209-16-423 = 1-7 



2 



16-423 



4 



18-204 



5 



18-209 



6 



18-209 



1 



18-209 



3093-4' 



Q = 34136° 



The following table contains the result of every thermal 

 experiment made with hydrogen : 



First series. 



Thermometer No. 1. 



No. of exp. Calories. 



33702 

 34483 

 34395 

 34254 

 33854 

 33942 

 33727 



Second series. 

 Thermometer No. 1. 

 No. of exp. Calories. 

 8 33932 



Third series. 



Thermometer No. 172,863. 



No. of exp. Calories. 



9 

 10 

 11 



34008 

 33934 

 34039 



12 

 13 

 15 



Mean 34051 



Probable-error.. ± 80 



33978 



± 18 



34041 

 33945 

 34136 



34041 

 ± 38 



