Thermodynamics

What is the difference between \(\Delta H\) and \(\Delta \mathrm{U}\) for reaction given below at \(298 \mathrm{~K}\) ?

(\(\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\)

\(2 \mathrm{C}_6 \mathrm{H}_{6(\ell)}+15 \mathrm{O}_{2(\mathrm{~g})} \rightarrow 12 \mathrm{CO}_{2(\mathrm{~g})}+6 \mathrm{H}_2 \mathrm{O}_{(\ell)}\)