SULPHURIC ACID AND WATER. 285 
The following table shows the several times 
required for its cooling when filled with diluted 
acid of the different strengths. 
Anhydrous Specitic |Vime required for cooling from 130° 
Acid. Water. Gravities. to 100°. 
1 atom + 2 atoms| 1.7837 2040 seconds. 
i Mois io 1.6588 2040 = 
5 +4 “ 1.5593 2055 — 
Hb paat’ Sth ho 1.4737 2115 _ 
By deducting 179, the number of seconds 
required for the cooling of the empty bulb, 
from the several times required for its cooling 
when filled with the liquids, we get the ratios 
of the specific heats of equal volumes of the 
several liquids, thus: 
Water’ se sc ee ee oe ee ees D00 1 ho —oed 
l atom acid + 2 atoms water 2040 — i179 = 1861 
] “ + 3 < ZU =o) = ead 
ih 6 + 4 “é 2055—e— 01 (98 —=s18R6 
1 “ + 5 ee 2115°— 179 =. 1936 
And, dividing these numbers by the specific 
gravities, we get the ratios of the specific heats 
of equal weights, thus: 
WEE ss ce Sense ce ns edet "1.0000 warl 
l atom acid + 2 atoms water 1861 ~ 1.7837 = 1043.3 
1 & 4+. 3 ‘6 1861 ~ 1.6588 = 1121.9 
z “ + 4 “ 1876 ~— 1.5593 = 1203.1 
1 “ as) 7! 1936 + 1.4737 = 1313.7 
