The atmosphere is made up of 79% N₂ and 20% O₂.  To apply rotational or vibrational spectroscopy formulae to these diatomic molecules, you will need to use the reduced mass, given by:

A. Calculate the reduced mass for both N₂ and O₂ in kilograms.

Reduced mass for oxygen = ______________________.

Reduced mass for nitrogen = ______________________.

B. Given the rotational constant  = 1.99 cm^-1 for N₂ and 1.45 cm^-1 for O₂ determine the bond length of each molecule.

Bond length for oxygen = ______________________.

Bond length for nitrogen = ______________________.

C. Calculate the intensity of the J=0 à J=1 transition in the rotational spectra of N₂.

Microwave absorption intensity for nitrogen = ______________________.