Calculate the energy of a photon of wavelength 11.56 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)

Question

Brooks

Chemistry

4 April, 19:42

Calculate the energy of a photon of wavelength 11.56 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)

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Nina Carlson · Answer 1

V = f. (wavelength)

Because photons travel at the speed of light, v = c = 2.998x10^8m/s

2.998x10^8 = f x 11.56

f = 25934256.06Hz

E = hf = 6.626x10^-34 x 25934256.06

= 1.718403806x10^-26 = 1.718x19^-26 J (3sf)