We are asked to calculate ΔE for the change in state of 1.0 mol H2O(l) at 81 oC to H2O(g) at 115 oC.
Find ΔE for the change in state of 1.0 mol H2O(l) at 81 oC to H2O(g) at 115 oC. The heat capacity of H2O(l) = 75.3 J/mol K, heat capacity of H2O(g) = 25.0 J/mol K, and the heat of vaporization of H2O is 40.7 103/mol at 100 oC.
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