Heating a 24.0-g aluminum can raises its temperature by 15.08C. Find the value of q for the can.

Strategy Heat flow depends on the heat capacity of the material being heated, the size of the sample, and the change in temperature. Because the information given is in mass, it will be easier to use the specific heat rather than the molar heat capacity.

The value of the specific heat of aluminum can be found in Table 9.2. Because the temperature change is given in 8C, we will write the units as J g⁻¹ 8C⁻¹.

Table 9.2

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Substance Al(s) Cu(s) H₂O(s) H₂O(l) H₂O(g) Specific Heat, c (Jg-¹ K-¹) 0.900 0.385 2.09 4.18 2.03 Molar Heat Capacity, Cp (J mol-¹ K-¹) 24.3 24.5 37.7 75.3 36.4