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Two ideal gases are contained within these containers separated by the stopcock. When the stopcock is opened, the particles move randomly through both containers.

Which of the following statements describes the entropy of the system?


Entropy has decreased because the particles are no longer separated in an orderly arrangement.


Entropy has increased because the particles have become randomly arranged and distributed.


Entropy has remained the same because the number of gas particles has not changed; only their positions have changed.


Entropy cannot be determined without the identities of the gas molecules involved.

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