Posted by Ivy on Thursday, September 8, 2011 at 10:05pm.
Calculate the wavelength of light that must be absorbed by hydrogen atom in its ground state to reach the excited ste of E=+2.914*10^(18)

Ap Chemistry  Jacky, Thursday, January 19, 2017 at 8:24pm
E = hc/λ where h = 6.626 E 34 Js
+2.914*10^(18) J = [6.626*10^(34) Js (3*10^8) m/s] / λ
so do some mathematical manipulation and isolate λ to get:
λ = [6.626*10^(34) Js (3*10^8) m/s] / +2.914*10^(18) J
& you can use a calculator to get the final answer :)