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Calculate the heat produced (in kJ) when...

Calculate the heat produced (in kJ) when 224 gm of CaO is completely converted to `CaCO_(3)` by reaction with `CO_(2)` at `27^(@)` in a container of fixed volume.
Given : `DeltaH_(f)^(@)(CaCO_(3),s)=-1207kJ//mol," "DeltaH_(f)^(@)(CaO,s)=-635kJ//mol`
`DeltaH_(f)^(@)(CO_(2),g)=-394kJ//mol,["Use R"=8.3JK^(-1)mol^(-1)]`

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