Chemistry 60 Help

Question

The equipment used for aviation communications emits high‑frequency radiowave energy with a wavelength of 0.700 km. What is the energy of exactly one photon of this radiowave radiation?

E=

What is the energy of one mole of this radiowave radiation? E=

Answer 1

0.700 km x 1000 km/m = 700 m = λ = wavelength

E = hc/λ

E = energy

h = Planck's constant

c = speed of light

λ = wavelength in meters

E = (6.626x10^-34 Jsec)(3x10⁸m/sec) / 700 m

E = 2.84x10^-18 J = energy of one photon

2.84x10^-18 J/photon x 6.02x10²³ photons/mole = 1.71x10⁶ J/mole of photons