In how many of the folowinf reaction `|H^(@)|gt|DeltaE^(@)|`, assuming reacftion to be occurring at a constant temperature and pressure. `H_(2)+(1)/(2)O_(2)rarrH_(2)O(l)` Combustion of `C_(2)H_(8)(g)` at 400 K Dimerisation of `NO_(2)(g)` Fusion of water at `0^(@)` C Vaporisation of any liquid at its boiling poing Dossociation of `CaCO_(3)(s)` Combustion of `C_(2)H_(4)` at 300m K

In how many of the folowinf reaction `|H^(@)|gt|DeltaE^(@)|`, assuming

1.	In how many of the folowinf reaction `\|H^(@)\|gt\|DeltaE^(@)\|`, assuming reacftion to be occurring at a constant temperature and pressure. `H_(2)+(1)/(2)O_(2)rarrH_(2)O(l)` Combustion of `C_(2)H_(8)(g)` at 400 K Dimerisation of `NO_(2)(g)` Fusion of water at `0^(@)` C Vaporisation of any liquid at its boiling poing Dossociation of `CaCO_(3)(s)` Combustion of `C_(2)H_(4)` at 300m K
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