Posted by mary on Thursday, October 21, 2010 at 12:57pm.
You may have got this question in a chem glass, but it is really about physics.
E = h*frequency is the equation to use
h is Planck's constant, which you were given.
Solve for the frequency, in s^-1 (also called Hz)
You don't need to use the speed of light to answer this question. You would need that for the wavelength.
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