Which of the following statements best describes the reaction?

Which of the following statements best describes the reaction?

The diagram below shows how a chemical reaction in a cylinder with a piston that affects the volume of the system. Use this diagram to answer the following questions.

Which of the following statements best describes the reaction?

Part 1 (1 Point)

Choose one:

A.   Work is done by the system on its surroundings.

B.   Work is done on the system by the surroundings.

C.   No work is being done.

D.   A conclusion cannot be determined from the information given.

Part 2   (2 points)

If the reaction is endothermic, what happens to the internal energy of the system when the reaction is proceeding?

Choose one:

A.   It increases.

B.   It decreases.

C.   It remains constant.

D.   A conclusion cannot be determined from the information given.

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