Exam 2
Final Grade
Feedback will be available after submission
Correct answers will be available after all grades have been posted
SUBMITTED 4/8/26, 11:05 AM
RECEIPT: F5C5CFE5F878474CB99E33B4A8A7EB00
1 MULTIPLE CHOICE 8/8
A rigid tank initially contains a mixture of water liquid and vapor with a vapor quality of 0.7
and a pressure of 75 kPa. Then, heat is transferred into the tank and the mixture becomes
saturated vapor. What is the temperature after heating? (in oC)
A 102
B 129
C 122
D 107
E 95
2 MULTIPLE CHOICE 8/8
Air in a piston–cylinder device expands from 500 kPa and 0.8 m3 to 250 kPa and 1.35 m3
through a polytropic process. How much is the moving boundary work done during this
process? (in kJ)
A 123
, B 181
C 158
D 192
E 176
3 MULTIPLE CHOICE 8/8
How much energy is needed to convert 3-kg of saturated water into saturated vapor at a
constant pressure of 8 MPa? (in kJ)
A 4095
B 2883
C 4325
D 6143
E 646
4 MULTIPLE CHOICE 8/8
If PR= 1.5 and vR=0.5, what is the Z factor?
A 0.90
B 0.52
C 0.73
Final Grade
Feedback will be available after submission
Correct answers will be available after all grades have been posted
SUBMITTED 4/8/26, 11:05 AM
RECEIPT: F5C5CFE5F878474CB99E33B4A8A7EB00
1 MULTIPLE CHOICE 8/8
A rigid tank initially contains a mixture of water liquid and vapor with a vapor quality of 0.7
and a pressure of 75 kPa. Then, heat is transferred into the tank and the mixture becomes
saturated vapor. What is the temperature after heating? (in oC)
A 102
B 129
C 122
D 107
E 95
2 MULTIPLE CHOICE 8/8
Air in a piston–cylinder device expands from 500 kPa and 0.8 m3 to 250 kPa and 1.35 m3
through a polytropic process. How much is the moving boundary work done during this
process? (in kJ)
A 123
, B 181
C 158
D 192
E 176
3 MULTIPLE CHOICE 8/8
How much energy is needed to convert 3-kg of saturated water into saturated vapor at a
constant pressure of 8 MPa? (in kJ)
A 4095
B 2883
C 4325
D 6143
E 646
4 MULTIPLE CHOICE 8/8
If PR= 1.5 and vR=0.5, what is the Z factor?
A 0.90
B 0.52
C 0.73
