Try it!
Give these problems a try. A full solution is given in the video at the bottom of the page.
A laser emits green light with a wavelength of 523 nm:
What is the energy of one photon from this laser?
What is the energy of 1 mole of these photons?
If the laser emits 1.30 x 10 J of energy during a pulse, how many photons are emitted during the pulse?
Useful constants and equations from your equation sheet (available on exams):
- c = λν
- c = 3.00 x 10 m/s
- = 6.022 x 10
- E = hν
- h = 6.626 × 10 J*s
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