Energy and Light Frequency


by Soaring Crane
Tags: energy, frequency, light
Soaring Crane
Soaring Crane is offline
#1
Nov4-05, 06:39 PM
P: 483
The absorption of light of frequency 1.16 x 10^11 Hz is required for CO molecules to go from the lowest rotational energy level to the next highest rotational energy level. Determine the energy for this transition in kJ/mol. h = 6.626 x 10-34 J s
a. 7.69 x 10-23 kJ/mol
b. 949 kJ/mol
c. 46.3 kJ/mol
d. 0.0463 kJ/mol
E = hv
= (1.16*10^11 Hz)(6.626*10^-34 J*s)
= 7.686 *10^-23 J = 7.69*10^-26 kJ* (6.02*10^23 molecules/ 1 mol) = 0.04629 kJ/mol
Thanks.
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
Doc Al
Doc Al is offline
#2
Nov4-05, 06:55 PM
Mentor
Doc Al's Avatar
P: 40,883
Looks good to me.


Register to reply

Related Discussions
Does light have a frequency limit? General Physics 34
Frequency of light Introductory Physics Homework 1
How do i measure light frequency? General Physics 14
Frequency of light??? Quantum Physics 4
Frequency Of Light Question Quantum Physics 21