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When 0.5 J of heat passes between two large bodies in contact at temperatures of 70 ◦C and 25 ◦C, what is the change of entropy? If this occurs in 0.23 s, what is the rate of change of entropy di S/dt?
2. What is the entropy of 1.00 L of N^{2} (g) at T = 350.0 K and p = 20.25 atm given that the standard (p = 1.00 bar, T = 298.15 K) molar entropy S^{0}_{m} = 191.6 J K^{−1} mol^{−1}? (Calculate the molar amount of N2 using the ideal gas equation.)
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