Question

solve step by step...................​

Answer 1

Step - by - Step explanation :

Frequency,

v = 5 × 10¹⁴ s ⁻¹ (Hz)

Energy of 1 photon,

E = hv

h = 6.626 × 10⁻³⁴ Js

Therefore,

E = ( 6.626×10⁻³⁴Js) × (5×10⁻¹⁴s⁻¹)

= 3.313 × 10⁻¹⁹ J

Enegy of 1 mol of photons

= 3.313 ×10⁻¹⁹ × 6.022 × 10²³

= 199.51 kJ / mol

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