In how many of the following reaction $\left|{\mathrm{H}}^{\circ }\right|>\left|{\mathrm{\Delta E}}^{\circ }\right|$, assuming reaction to be occurring at a constant temperature and pressure.
(I) ${\mathrm{H}}_2+\frac{1}{2}{\mathrm{O}}_2⟶{\mathrm{H}}_2\mathrm{O}\left(l\right)$

(II) Combustion of ${\mathrm{C}}_2{\mathrm{H}}_8\left(\mathrm{g}\right)$ at $400 \mathrm{K}$

(III) Dimerisation of ${\mathrm{NO}}_2\left(\mathrm{g}\right)$

(IV) Fusion of water a $0^{\circ }\mathrm{C}$

(V) Vaporisation of any liquid at its  boiling point

(VI) Dissociation of ${\mathrm{CaCO}}_3\left(s\right)$

(VII) Combustion of ${\mathrm{C}}_2{\mathrm{H}}_4$ at $300 K$