EML3100 HW #21 - Fall 1998 |
Problems:
6.9c,d
6.13d,e
Word Problem
(a) Find the change in specific entropy (in kJ/kgK) when an aluminum pie pan is heated from room temperature (68 degrees F) to 450 degrees F.
(b) Find the change in specific entropy (in kJ/kgK) for a copper pot experiencing the same temperature change.
Answers:
No answers will be given
Hints:
| 6.9d: | remember that s-bar = S/n = S/(# moles) and s = s-bar/M = s-bar/(molecular mass) |
| 6.13: | Choose a specific heat value that is at the average of T2 and T1. Select your delta-s equation based on the given information. |
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