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Calculate the enthalpy change when infin...

Calculate the enthalpy change when infinitely dilute solution of `CaCl_(2)` and `Na_(2)CO_(3)` are mixed. `Delta_(f)H^(Theta)` for `Ca^(2+)(aq), CO_(3)^(2-)(aq)`, and `CaCO_(3)(s)` are `-129.80, -161.65`, and `-288.50 kcal mol^(-1)` respectively.

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