Proposed initial mass of cacl 2 to prepare 50 ml of

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22. Proposed Initial Mass of CaCl 2
120 37.6 30.8 135 37.3 31.4 150 37.2 31.5 165 37.1 31.4 180 37.0 31.3 Table 5: Calcium Chloride Experimental Data Trial #1 Trial #2 Mass of CaCl 2 (g) 5.509g 5.583g Volume of Water (mL) 50mL 50 mL Mass of Water (g) 50g 50g Initial temperature, T i (ºC) 21.2C 22.2C Final temperature, T f (ºC) 37.0C 31.3C 23. Fill in the following tables with the experimental data and results for part two .
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Average ∆G rxn (kJ/mol) 125324668 24. Identify the system and the surroundings .
25. Explain the observed temperature change in terms of heat being lost or gained by the system or surroundings. . .
27. Based on your theoretical calculation in Table 6, the sign of the reaction’s change in entropy, ∆S rxn, is positive / negative . This means that for the solvation process, the products are more / less disordered than reactants.

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