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Why does the entropy of a gas increase when it expands into a vacuum?.
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Why does the entropy of a gas increase when it expands into a vacuum?.

User SumNeuron
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Answer:

When a gas expands into a vacuum, its entropy increases because the increased volume allows for greater atomic or molecular disorder. The greater the number of atoms or molecules in the gas, the greater the disorder.

Step-by-step explanation:

User Miquel Coll
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