General Chemistry HW

Question

Some instruments differentiate individual quanta of electromagnetic radiation based on their energies. Assume such an instrument has been adjusted to detect quanta that have 3.25 x 10–16 J of energy. What is the wavelength of the detected radiation? Give your answer in nanometers. 

Answer 1

The energy of a photon is E_ν = hν where h is Planck's constant and ν is frequency in s = ^-1

Since, c = λν , we can combine these equations and solve for λ, the wavelength in m:

λ = hc/E_v You can look up h in Js and c, the speed of light in m/s

There are 10⁹ nm/ 1 m

Please consider a tutor.