A system absorbs 1.5 kJ at 25ºC from its surroundings and later releases 1.5 kJ to its surrounding at 75ºC. Calculate the overall entropy change for the system assuming both processes are reversible . Ans: 0.7 J/K

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Q: Calculate the entropy change of the surroundings when 1.00 mol H2O(l) vaporizes at 90 ℃ and 1 bar.…

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