Thermodynamics-how to tell if a gas is an ideal gas?

[pyroknife]

I know a gas is ideal if it has a higher T or low P relative to its CP.

A probably stated that nitrogen is at 300kPa and 227 deg C. The solutions says its an ideal gas, but how does it know? Is it just same to assume that or is there an actual table that has gas's and their CPs?

 

[kushan]

Hey pyroknife
Ideal gas is a theoretical concept
And real gas tend show ideal gas behaviour at high temperature and low pressure ( both) .

 

[kushan]

Can you please elaborate your problem ?