Unformatted text preview: l) 6.02 kJ 25 1000 Q2 n U2 (0.245) [0.0252 1547 10 5 T ] dT
. 7.91 kJ 25
1000 Q3 n U3 (0.245) [0.0252 1547 10 5 T 3.012 10 9 T 2 ] dT
. 25 6.02  7.67
100%
7.67
7.91 7.67
% error in Q2 =
100%
7.67
% error in Q1 = 215%
.
313%
. 81 7.67 kJ 8.3 (cont’d)
b. Cp Cv R C p [ kJ / (mol o C)] (0.0252 1547 10 5 T 3.012 10 9 T 2 ) 0.008314
.
0.0335 1547 10 5 T 3.012 10 9 T 2
. z T2 Q H n C P dT
T1 z 1000 (0.245 mol) [0.0335 1547 10 5 T 3.012 10 9 T 2 ] dT [kJ / (mol o C)]
. 9.65 10 3 J 25 Piston moves upward (gas expands). c.
8.4 The differe...
View
Full Document
 Spring '08
 wetzel

Click to edit the document details