Chapter 5, Problem 5.47SP

Hard wintergreen-flavored candies are triboluminescent,meaning that they emit flashes of light when crushed. (You can see it for yourself if you look in a mirror while crunching a wintergreen Life Saver in your mouth in a dark room.)The strongest emission is around $\lambda =450\text{nm}$ .
(a) What is the frequency in ${\text{s}}^{-1}$ of photons with $\lambda =450\text{nm}$ ?
(b) That is the energy in kJ/mol of photons with $\lambda =450\text{nm}$ ?
(c) What is the color of the light with $\lambda =450\text{nm}$ ?