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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

Respuesta :

specific heat of Hg=0.14j/g-k which is the smallest anyway required equation to calculate the heat energy=ms*del theta=mass of substance *specific heat of that substance *difference in temperature
Lampa20
Specific heat represents amount of energy required to add to 1 gram of substance to raise its temperature for 1K. If we want to invest smallest amount of energy we want to search for substance that has lowest specific heat.

That substance accordint to table is:
Hg

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