Limestone stalactites and stalagmites are formed in caves by the following reaction:

If 1 mol of CaCO₃ forms at 298 K under 1 atm pressure, the reaction performs 2.47 kJ of P-V work, pushing back the atmosphere as the gaseous CO₂ forms. At the same time, 38.95 kJ of heat is absorbed from the environment.What are the values of ΔH and of ΔE for this reaction?

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Ca2+(aq) + 2 HCO; (aq) CaCO3(s) + CO2(g) + H2O(1)