What is the energy of the photons


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Calculating the total energy of photons from a helium-neon laser.

Q: A helium-neon laser gives off red light with a wavelength of 632.8 nm (nanometers). What is the energy of the photons coming out of the laser?

(Hint: the speed of light is 3x108 m/sec.)

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Chemistry: What is the energy of the photons
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