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 r

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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