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Given enthalpy of formation of CO_2(g) and CaO(s) are -94.0 kJ and -152 kJ respectively and the enthalpy of the reaction,CaCO_3(s)rarrCaO(s) + CO_2(g) is 42 kJ. The enthalpy of formation of CaCO_3(s) is: |
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Answer» `-42 KJ` |
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