9. Calculate S^° for the process that 1 mol (18.02 g) of ice melts at 0^°C and increases temperature to 50^°C. H_fus for ice is 6.02 kJ/mol. Specific heat capacity for water is 4.18 J/g·K. (10 points)

4. A balloon is becoming its full extent after heating the air inside. In the final stage of this process the volume of the balloon changes from 4.0 x 108 L to 4.5 x 108 L by addition of 1.3 x 104 J of the energy as heat.Assuming the balloon expand against a constant pressure of 1.0 atm, please calculate \( \Delta E \) for the process.

9. Calculate \( \Delta S^\circ \) for the process that 1 mol (18.02 g) of ice melts at \( 0^\circ \)C and increases temperature to \( 50^\circ \)C. \( \Delta H_{\text{fus}} \) for ice is 6.02 kJ/mol. Specific heat capacity for water is 4.18 J/g·K. (10 points)

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