Understanding Cycle Process w/ Diatomic Ideal Gas

[Abigale]

Hi,
I try to understand a cycle process with an diatomic ideal Gas.

Question:
Is it possiblie to use the ideal gas law:

pv=NkT

for the diatomic gas?

I thought it is just for monoatomic.

Thx
Abby

 

[DrClaude]

Is it possiblie to use the ideal gas law:

pv=NkT

for the diatomic gas?

Yes, an ideal gas need not be monatomic.

 

[Philip Wood]

DrClaude is right, of course. Almost all the molecules (O₂ and N₂) in air are diatomic, and at very low densities air obeys pV = nRT more and more closely.