Problems:

6.25
6.28 a,b,c
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:

6.25	Only values from Ideal Gas tables are given.   Values using a constant specific heat value will vary depending on the selection of Cp (a) delta-s = 0.24289 kJ/kgK (b) delta-s = 0.47632 kJ/kgK (c) delta-s = 0.4769 kJ/kgK (d) delta-s = 0.2701 kJ/kgK (e) delta-s = - 0.8373 kJ/kgK
6.28	(a) delta-s = 1.7317 kJ/kgK (b) delta-s = 1.7235 kJ/kgK (c) delta-s = 1.8033 kJ/kgK
Word Problem	No answers will be given.

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