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Posted by on Monday, September 23, 2013 at 11:01pm.

A laser pulse with wavelength 540 nm contains 4.40 Mj of energy. How many photons are in the laser pulse?

  • chemistry - , Tuesday, September 24, 2013 at 12:14am

    E = hc/wavelength. Substitute and solve for E = energy of one photon. Then,
    E of 1 photon x #photons = 4.40E6 J.
    Solve for # photons.

  • chemistry - , Thursday, March 19, 2015 at 10:15am

    1.198

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