A closed 2.0-L container holds 3.0 mol of an ideal gas.If 180 J of heat is added,what is the change in internal energy of the system?

A) zero
B) 130 J
C) 155 J
D) 180 J
E) 230 J

Question

A closed 2.0-L container holds 3.0 mol of an ideal gas.If 180 J of heat is added,what is the change in internal energy of the system?
​
A) zero
B) 130 J
C) 155 J
D) 180 J
E) ​230 J

Quizplus · Accepted Answer

As the container holding the gas is closed, the volume will remain constant. Hence, the work done by or on the gas is zero. Therefore, the change in internal energy of the system is equal to the heat added, which is given as 180 J. Hence, the correct answer is D) 180 J.

A Closed 2