Gibbs free energy spontaneity 1

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The molar enthalpy of fusion of solid ammonia is \(5.65\) kJ mol\(^{-1}\), and the molar entropy of the fusion is \(28.9\) J K\(^{-1}\) mol\(^{-1}\). Calculate the Gibbs free energy change for the conversion of \(1.80\) mol solid ammonia to liquid ammonia at \(170\) K, and determine whether or not the ammonia melting is spontaneous at \(170\) K.

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