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Answer: -56.98 stion 4 orrect ark 0.00 out 2.00 The molar heat capacity of ethane (Coo) is represented in the temperature range 298 K to 400 K by the empirical expression Cp.m 14.73+0.1272T where Cpm is in J K mol1 and T is in K. The corresponding expressions for C(s) and H2(g) are given in the back of the Atkins textbook. Calculate the standard enthalpy of formation of ethane at 356 K from its value at 298 K, in kJ mol 2C(s)+3H2(g) C2Helg) P Flag question Answer: 8763 tha isotiermal I expansion of nitrogen gas from an initial

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