Which substance in Table 5.2 requires the smallest amount of energy to increase the temperature of 51.5g of that substance by 10K ?
All of these are specific heats of some substances at 298 K.
So N2(g) is 1.04 J/g-k
Al (s) .90 J/g-k
Fe (s) .45 J/g-k
Hg (l) .14J/g-k
H2O (l) 4.18 J/g-k
CH4 (g) 2.20 J/g-k
CO2 (g) .84 J/g-k
CaCO3 (s) .82 J/g-k