isaiahhardei59901 isaiahhardei59901 25-04-2024 Physics Answered 0.8kg of air (R=294J/kg.K and Cv = 711J/kg.K) is expanded according to the law PV¹.25 = constant from initial conditions 1.2MPa and 0.05m³ to a final pressure of 420kPa. Determine the change in entropy.