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Green light has a frequency of about 6

Chemistry

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Green light has a frequency of about 6.00 x 10^14 s-1 . What is the energy of a photon of green light?
4 sigfig
E=J

If you have time can you answer this one too??

Hospital X-ray generators emit X rays with wavelength of about 15.0 nanometers (), where 1 nm = 10^9 m. What is the energy of a photon in an X ray?
Express answer in joules.

And please show me all the details on how you arrived to your answers.