## Chemistry and Chemical Reactivity (9th Edition)

$\lambda=310\ nm=0.31\times10^{-6}\ m$ $c=\lambda\times\nu$ $\nu=9.67\times10^{14}\ s$ $E=h\times\nu$ $E=6.41\times10^{-19}\ J/photon$ Per mol: $E=385.9\ kJ/mol$