Author Question: In a transition from one vibrational state to another, a molecule emits a photon of wavelength 5.56 ... (Read 57 times)

abern · **on:** Jul 29, 2018

In a transition from one vibrational state to another, a molecule emits a photon of wavelength 5.56 m.

What is the energy difference between these two states? (c = 3.00 108 m/s, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J)
A) 13.6 MeV B) 13.6 eV C) 0.223 eV D) 0.223 MeV E) 2.23 MeV

Question 2

In massive stars, three helium nuclei fuse together, forming a carbon nucleus. This reaction heats the core of the star. The net mass of the three helium nuclei must therefore be

A) less than that of the carbon nucleus.
B) the same as that of the carbon nucleus since mass is always conserved.
C) the same as that of the carbon nucleus since energy is always conserved.
D) higher than that of the carbon nucleus.