$\overline{){\mathbf{E}}{\mathbf{=}}{\mathbf{hv}}}\left(1\right)$

$\overline{){\mathbf{\lambda}}{\mathbf{=}}\frac{\mathbf{c}}{\mathbf{v}}}\left(2\right)$

Solving for** frequency,ν**:

$\mathbf{3}\mathbf{.}\mathbf{027}\mathbf{\times}{\mathbf{10}}^{\mathbf{-}\mathbf{19}}\mathbf{J}\mathbf{=}\mathbf{(}\mathbf{6}\mathbf{.}\mathbf{626}\mathbf{\times}{\mathbf{10}}^{\mathbf{-}\mathbf{34}}\mathbf{}\mathbf{J}\mathbf{\xb7}\mathbf{s}\mathbf{)}\mathbf{\nu}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\mathbf{\nu}\mathbf{=}\frac{\mathbf{3}\mathbf{.}\mathbf{027}\mathbf{\times}{\mathbf{10}}^{\mathbf{-}\mathbf{19}}\overline{)\mathbf{J}}}{\mathbf{(}\mathbf{6}\mathbf{.}\mathbf{626}\mathbf{\times}{\mathbf{10}}^{\mathbf{-}\mathbf{34}}\mathbf{}\overline{)\mathbf{J}}\mathbf{\xb7}\mathbf{s}\mathbf{)}}$

v =** 4.568**** × 10 ^{14} s^{-1} or Hz**

A photon of light produced by a surgical laser has an energy of 3.027 × 10^{−19} J. Calculate the frequency and wavelength of the photon. What is the total energy in 1 mole of photons? What is the color of the emitted light?

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