The energy of one mole of photons of radiation of wavelength 300 nm is

$\begin{array}{r}\text{ (Given : }\mathrm{h}=6.63\times {10}^{-34}\mathrm{Js},{\mathrm{N}}_{\mathrm{A}}=6.02\times {10}^{23}{\mathrm{mol}}^{-1}\text{, }\mathrm{c}=3\times {10}^8{\mathrm{ms}}^{-1}\text{ ) }\\ \end{array}$