Problem: ElementsCompoundsSubstanceSpecific Heat (J/g-K) SubstanceSpecific Heat (J/g-K) N2(g)1.04H2O(l)4.18Al(s)0.90CH4(g)2.20Fe(s)0.45CO2(g)0.84Hg(l)0.14CaCO3(s)0.82Table Specific Heats of Some Substances at 298 KWhich substance in the table undergoes the greatest temperature change when the same mass of each substance absorbs the same quantity of heat?

FREE Expert Solution

We’re being asked to determine the substance with the greatest temperature change when the same mass of each substance absorbs the same quantity of heat.


Recall that heat can be calculated using the following equation:

q=mcT

q = heat, J

+qabsorbs heat
–qloses heat

 m = mass (g)
 c = specific heat capacity = J/(g·°C)
 ΔT = Tf – Ti = (°C)


Since we are being asked for temperature change, we will first derive an equation for ΔT then determine the substance with the greatest temperature.

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Problem Details


ElementsCompounds

SubstanceSpecific Heat (J/g-KSubstanceSpecific Heat (J/g-K) 
N2(g)1.04H2O(l)4.18
Al(s)0.90CH4(g)2.20
Fe(s)0.45CO2(g)0.84
Hg(l)0.14CaCO3(s)0.82


Table Specific Heats of Some Substances at 298 K

Which substance in the table undergoes the greatest temperature change when the same mass of each substance absorbs the same quantity of heat?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Heat Capacity concept. You can view video lessons to learn Heat Capacity. Or if you need more Heat Capacity practice, you can also practice Heat Capacity practice problems.