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Two objects which is the B1 (T = 40 C) and B2 (T = 18 C), has experienced entropy changes of 6.4 x 104 J/K and 2.8 x 104 J/K, respectively after they had been placed in direct contact with each other. B1 has lost 2.0 x107 J of heat. How much heat was lost by B2? What was the entropy change in the universe after the process?

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