
Interpretation: The calories of thermal energy that must be transferred to heat up a100 g aluminium pot from 20 oC to 80 oC needs to be determined.
Concept Introduction:
The amount of energy transferred for the given mass of substance can be calculated as follows:
Here, m is mass, c is specific heat capacity and

Answer to Problem 6RE
1260 cal.
Explanation of Solution
The specific heat capacity of aluminium is 0.21 cal/g oC. The mass of aluminium pot is 100 g. Also, the initial and final temperature is 20 oC and 80 oC respectively.
The calories of energy required to raise the temperature of aluminium can be calculated as follows:
Putting the values,
Thus, the calories of thermal energy that must be transferred to heat up a 100 g aluminium pot is 1260 cal.
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