
Concept explainers
Interpretation: The final temperature of the resultant water-iron mixture needs to be determined if a sample of
Concept introduction: Specific heat of capacity is the amount of heat required to raise the temperature of a given substance of mass, m by one degree.
The equation for heat is as follows:
Where, Q is the amount of heat, m is the mass of substance, s is the specific heat capacity and

Answer to Problem 56A
The final temperature of the resultant water-iron mixture will be
Explanation of Solution
Initially, the temperature of iron sample is
The specific heat capacity for the liquid water is
Let the final temperature of the resultant water-iron mixture be
The heat lost by the iron sample, which is at
The heat gained by water sample, which is at
The heat lost by the iron sample will be equal to the amount of heat gained by water sample as:
Where, the negative sign represents that the heat is released during the process.
Hence, the final temperature of the resultant water-iron mixture will be
After mixing the both water samples, the final temperature of the resultant mixture of water-iron will be in between the two given temperatures (i.e. between
Chapter 10 Solutions
World of Chemistry, 3rd edition
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