Problem: Table 5.2Specific Heats of Some Substances at 298 KElementsSubstanceSpecific Heat (J/g K)N2(g)1.04Al(s)0.90Fe(s)0.45Hg(l)0.14CompoundsSubstanceSpecific Heat (J/g K)H2O(l)4.18CH4(g)2.20CO2(g)0.84CaCO3(s)0.82Which substance in Table 5.2 requires the smallest amount of energy to increase the temperature of 50.5 g of that substance by 13 K?

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↑ C (specific heat) ↑ higher energy required

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Problem Details

Table 5.2

Specific Heats of Some Substances at 298 K
Elements
SubstanceSpecific Heat (J/g K)
N2(g)1.04
Al(s)0.90
Fe(s)0.45
Hg(l)0.14
Compounds
SubstanceSpecific Heat (J/g K)
H2O(l)4.18
CH4(g)2.20
CO2(g)0.84
CaCO3(s)0.82


Which substance in Table 5.2 requires the smallest amount of energy to increase the temperature of 50.5 g of that substance by 13 K?

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