Air expands in a cylinder from 827ºC to 87ºC while the pressure remains constant. Determine the entropy change assuming a) constant specific heats from Table B-6 and b) using Table F-1. The percent error in the part (a) calculation is nearest:
A) 2.9%
B) 3.5%
C) 3.8%
D) 4.2%
D) 4.2%
Assuming constant specific heat, the entropy change is:
Assuming variable specific heat, Table F-1 is used to find
The percent error is % error 
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