Determine the frequency and energy for light with a wavelength of $721\mathrm{.}3nm.$

$u=$

$E=$

$\frac{J}{m}ol$

What is the color of light with a wavelength of $721\mathrm{.}3nm?$ Refer to the electromagnetic spectrum as needed.

Determine the wavelength and energy for light with a frequency of $5\mathrm{.}831{10}^{14}{s}^{-1}.$

$=$

$nm$