The energy required to break a double C=C covalent bond is about 1.13x10^-18J. Calculate the wavelength of the photons that can supply the specified energy. It is well to note that the Planck's constant is 6.6256x10^-34J/s and the speed of light equals 3x10^8m/sec. The Avogadro's number is 6.022x10^23 per mole.
Solution:
E = h * c / ?
=> 1.13 * 10^-18 = 6.625 * 10^-34 * 3 * 10^8 / ?
=> ? = 17.588 * 10^-8 m
=> ?= 1.758 nm
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