Question

Calculate the energy of one mole of photons of radiations whose frequency 5×10^10 s^-1​

Answer 1

According to the formula

E=hυ.n

E= 6.626 x 10⁻³⁴ j s⁻¹x 5x10¹⁰ s⁻¹ x Nᴬ

E= 6.626 x 10⁻³⁴ j s⁻¹x 5x10¹⁰ s⁻¹ x 6.022x10²³

E=6.626 x 10⁻²⁴ j s⁻¹x 5 s⁻¹ x 6.022x10²³

E=6.626 x 10⁻¹ j s⁻¹ x 5s⁻¹ x 6.022

E=199.50KJ