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2.00 mole of He, 2.00 moles of N 2 and 3.00 moles of O 2 are allowed to mix spontaneously. The gas temperature and pressure

2.00 mole of He, 2.00 moles of N₂ and 3.00 moles of O₂ are allowed to mix spontaneously. The gas temperature and pressure are constant at 298 K and 1.00 bar for this process. What is the entropy change for the universe.

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