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Two aircraft rivets, one of iron and the other of copper,
Chapter 5, Problem 31P(choose chapter or problem)
Two aircraft rivets, one of iron and the other of copper, are placed in a calorimeter that has an initial temperature of 20.°C. The data for the metals are as follows:
|
Iron |
Copper |
Mass (g) |
30.0 |
20.0 |
Initial T (°C) |
0.0 |
100.0 |
c (J/g·K) |
0.450 |
0.387 |
(a) Will heat flow from Fe to Cu or from Cu to Fe?
(b) What other information is needed to correct any measurements that would be made in an actual experiment?
(c) What is the maximum final temperature of the system (assuming the heat capacity of the calorimeter is negligible)?
Questions & Answers
QUESTION: Problem 31P
Two aircraft rivets, one of iron and the other of copper, are placed in a calorimeter that has an initial temperature of 20.°C. The data for the metals are as follows:
|
Iron |
Copper |
Mass (g) |
30.0 |
20.0 |
Initial T (°C) |
0.0 |
100.0 |
c (J/g·K) |
0.450 |
0.387 |
(a) Will heat flow from Fe to Cu or from Cu to Fe?
(b) What other information is needed to correct any measurements that would be made in an actual experiment?
(c) What is the maximum final temperature of the system (assuming the heat capacity of the calorimeter is negligible)?
ANSWER:
Step 1 of 3
Part A.
The flow of heat will take place from copper to iron, because the copper is present at a higher temperature.