Answer:
does not exist
perfectly obeys all gas laws
Step-by-step explanation:
 Ideal gases is a simplification of real gases that is made to study them more easily. Then a hypothetical or theoretical, that is to say, imaginary gas is considered ideal gases. Despite not representing a gas that really exists, the ideal gas is a tool to facilitate a large number of mathematical calculations
The ideal gas behavior is at low pressures and high temperatures.
 The ideal gas equation is based condensing Boyle's law, Gay-Lussac's, Charles's and Avogadro's law: 
P * V = n * R * T 
where: 
- P = pressure 
- V = volume 
- n = number of moles 
- R = universal gas constant 
- T = temperature
 In this way an ideal gas perfectly obeys all gas laws.