6. the energy of a photon of light is given by e = hc/where h = planck's constant (6.626 x 10-34 jsec), c = the speed of light (3 x 108 m/sec) and the wavelength of light. in photosystem i, p700 in its ground state has an e'o = 0.4 v. excitation of p700 by a photon of 700 nm light alters e'o = -0.6 v. calculate the energy in a photon of 700 nm light and compare it to the g of exciting the photosystem to understand the efficiency of energy capture during photosynthesis. remember to convert the energy from a single photon of light to a mol of photons using avogadro's number.