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chemistry

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

  • chemistry -

    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 -

    1.198

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