Can someone please help?
How much total energy is emitted from a collection of 2.50 moles of H atoms if each atom is emitting a photon with a wavelength of 96.7 nm?
I believe you must first use wavelength=plank constant/ mass of object times velocity, then use energy=plank constant times frequency.
Thank you
frequency = c / 96.7 nm
E = h * f * 2.50 * 6.02e23