A chemical reaction took place in a 5 liter cylindrical enclosure fitted with a piston (like the cylinder in an internal combustion engine) . Over the time required for the reaction to be completed, the volume of the system changed from 1.40 liters to 3.70 liters. Which of the following statements below is true?
A) The enthalpy of the system remained unchanged.
B) The enthalpy of the system decreased.
C) The enthalpy of the system increased.
D) Work was performed by the system.
E) Work was performed on the system.
Correct Answer:
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