Answer to Question #135017 in Inorganic Chemistry for Destiny Diaz

Question

what is the energy of a mole of photons that have a wavelength of 705 nm?

Answer 1

E = hc/λ

h = 6.626 x 10⁻³⁴ J s

c = 3 x 10⁸ m s⁻¹

λ = 705 x 10⁻⁹ m

1 mol photons = 6.022 x 10²³ photons

Energy of one photon (E) =

= (6.626 x 10⁻³⁴ J s x 3 x 10⁸ m s⁻¹)/(705 x 10⁻⁹m)

= 2.82 x 10^-19 J

Energy of one mole photon (E):

x 6.022 x 10²³ = 1.70 x 10⁵ J