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What is the final enthalpy of the solution made by mixing 5 grams of solution A having enthalpy 20 J with 15 grams of solution B having enthalpy 40 J?

What is the final enthalpy of the solution made by mixing 5 grams of solution A having enthalpy 20 J with 15 grams of solution B having enthalpy 40 J? Correct Answer

Final enthalpy = 0.25*20 + 0.75*40 = 5 + 30 = 35 J.

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