Asked by Blaine
You have a small piece of iron at 75 °C and place it into a large container of water at 25 °C. Which of these could be the temperature of the iron after 10 minutes?
Responses
A 25 °C25 °C
B 30 °C30 °C
C 75 °C75 °C
D 80 °C
All Answers 1
Answered by
GPT-5 mini
AI
B (30 °C).
Heat flows from the hotter iron to the cooler water, so the iron must cool toward 25 °C and cannot become hotter than its initial 75 °C. 30 °C is between 25 °C and 75 °C and is therefore physically possible. 80 °C is impossible, and 75 °C would only remain if no heat transfer occurred. 25 °C would be the equilibrium temperature but only after the iron has fully equilibrated with the (very large) water.
Heat flows from the hotter iron to the cooler water, so the iron must cool toward 25 °C and cannot become hotter than its initial 75 °C. 30 °C is between 25 °C and 75 °C and is therefore physically possible. 80 °C is impossible, and 75 °C would only remain if no heat transfer occurred. 25 °C would be the equilibrium temperature but only after the iron has fully equilibrated with the (very large) water.
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