2011-03-09, 10:00 AM
In A, Plank's constant (h) is 6.526 x 10^-34, not -24. You converted nanometers to meters right. The rest is set up right.
When I do it I get 3.39 x 10^ -18... I'm sure that's what you meant when you said 3.4 x 19^-18
In B...Ionization energy is the energy an electron takes to break away from an atom.
They're saying is takes 2372 kJ (AKA 2372000 J) to break away completely from the first energy level. But since your electron is starting at the 2p level, you can subtract your previous answer (3.4 x 10^-18 J) from 2372000 J's total (which is basically the same 2372000 J) and then solve your equation. Except this time instead of not knowing energy and knowing wavelenth, you don't know wavelength and you do know energy.
I'm on Spring Break so my mind is off, but this is kind of how to do it I guess. If it doesn't work, just post so and I'll go look for a book or something to brush up on this stuff.
When I do it I get 3.39 x 10^ -18... I'm sure that's what you meant when you said 3.4 x 19^-18
In B...Ionization energy is the energy an electron takes to break away from an atom.
They're saying is takes 2372 kJ (AKA 2372000 J) to break away completely from the first energy level. But since your electron is starting at the 2p level, you can subtract your previous answer (3.4 x 10^-18 J) from 2372000 J's total (which is basically the same 2372000 J) and then solve your equation. Except this time instead of not knowing energy and knowing wavelenth, you don't know wavelength and you do know energy.
What I got when solving for B
I'm on Spring Break so my mind is off, but this is kind of how to do it I guess. If it doesn't work, just post so and I'll go look for a book or something to brush up on this stuff.