In a transition from one vibrational state to another, a molecule ...

[abern]

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.

[kmb352]

Answer to Question 1

C

Answer to Question 2

D

[abern]

TYSM

[brbarasa]

Gracias!