Chemistry

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Calculate the wavelength of a proton with energy 2.45 eV.

Please some help!

  • Chemistry -

    2.45 eV = 3.92E-19 joules.
    Then E = hc/wavelength.
    E = joules
    h = Planck's constant
    solve for wavelength in meters.

  • Chemistry -

    Can you write the result because i found 5.067e-7 and it's wrong.I try it many time in diffrent ways baut I finished with the some result!

  • Chemistry -

    Finally I found it.We have to do this :

    wavelength=h/P
    P^2=2*m*E
    P=sqrt(2*m*E)

    E = joule
    h = Planck's constant
    m = kg

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