What type of transformation is represented by curve 1?

What type of transformation is represented by curve 3?

What role does the entropy play in the evolution of a system?

For a monoatomic ideal gas, the value of 𝛾 (gamma) is:

What can be said about the entropy in a reversible adiabatic transformation?

Joule's first law states that for a perfect gas :

What is the change in internal energy of an ideal gas (2 moles) heated from 300 K to 600 K ? 

Given that: γ=1,67 and R=8,314 J K⁻¹ mol⁻¹

We consider a perfect gas undergoing an isothermal transformation from a state (P₁,V₁,T₁) to a state (P₂ ,V₂,T₂). Which of the following statements are correct?

Incorrect answers will be penalized.