An ideal gas can be taken from state a to state c in three different paths: a→b→c, a→d>c, and curved path a>c. The pressure of the ideal gas at point a is three times pressure at point d. the following information is given : Qo+ = -120 J (curved path) W ,→c = 60 J (curved path) W a+d+c = 95 J U, - Ug = 30 J Use the figure shown and the data given, answer the following 3 questions V 5- the change in internal energy U, -U. (A) -140 J (B) 45 J (C) 90 J (D) 60 J 6- the heat added to the gas in the process a→d>c. (A) -140 J (B) -155 J (C) -90 J (D) 60 J 7- the work done on the gas in the process a→b→c. (A) 95 J (B) 125 J (C) -90 J (D) 285 J

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An ideal gas can be taken from state a to state c in three different paths: a>b>c,
a→d>c, and curved path a>c. The pressure of the ideal gas at point a is three times
pressure at point d. the following information is given :
Q ot = -120 J (curved path) W 7 = 60 J (curved path)
W ardac = 95 J
U, - Ug = 30 J
P.
Use the figure shown and the data given, answer the following 3 questions
V
5- the change in internal energy U, -U..
(A) -140 J
(B) 45 J
(C) 90 J
(D) 60 J
6- the heat added to the gas in the process a→d→c.
(A) -140 J
(В)-155 J
(C) -90 J
(D) 60 J
7- the work done on the gas in the process a>b→c.
(A) 95 J
(B) 125 J
(C) -90 J
(D) 285 J
8- It was Joule who first established that heat is a form of energy, and thus laid the
foundation of the first law of thermodynamics.
a. True
b. False
9-The process at which n = 1 in the polytropic process means that the processes is
isothermal
a. True
b. False
10- Total heat content of a system is also known as enthalpy
a. True
b. False
Transcribed Image Text:An ideal gas can be taken from state a to state c in three different paths: a>b>c, a→d>c, and curved path a>c. The pressure of the ideal gas at point a is three times pressure at point d. the following information is given : Q ot = -120 J (curved path) W 7 = 60 J (curved path) W ardac = 95 J U, - Ug = 30 J P. Use the figure shown and the data given, answer the following 3 questions V 5- the change in internal energy U, -U.. (A) -140 J (B) 45 J (C) 90 J (D) 60 J 6- the heat added to the gas in the process a→d→c. (A) -140 J (В)-155 J (C) -90 J (D) 60 J 7- the work done on the gas in the process a>b→c. (A) 95 J (B) 125 J (C) -90 J (D) 285 J 8- It was Joule who first established that heat is a form of energy, and thus laid the foundation of the first law of thermodynamics. a. True b. False 9-The process at which n = 1 in the polytropic process means that the processes is isothermal a. True b. False 10- Total heat content of a system is also known as enthalpy a. True b. False
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