Question

what is the energy in joules of one quantum of 55.4 nm

Answer 1

E = hc/wavelength

wavelength in meters.

Answer 2

how do i solve this ?

Answer 3

Substitute h (Planck's constant), c = speed of light, and wavelength in meters. E will be in joules.

Answer 4

what is h?

Answer 5

Do you have a text? notes? can you google.

h = Planck's constant = 6.626E-34 J.sec
c = speed of light = 3E8 m/s
1 m = 1E9 nm.

Answer 6

dont you think if i had notes, i wouldnt be on this site................ jerk-off

Answer 7

To be honest about it I thought that was the first constant you memorized on the first day of class. Anyway, you have it now. I'll be glad to check your work if you care to post it.