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11-04-2024
Chemistry

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Consider the dissolution of CaCl₂:

CaCl₂(s) → Ca²⁺(aq) + 2Cl⁻(aq) ∆H = -81.5 kJ/mol

A 15.0-g sample of CaCl₂ is dissolved in 205.0 g water with both substances at 25.0 °C. Calculate the final temperature (in °C) of the solution assuming no heat loss to the surroundings and assuming the solution has a specific heat capacity of 4.184 J/ °C･g.

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