Awell-insulated diffuser is supplied with carbon dioxide at 110 kpa, 300 k, and 300 m/s. it is claimed that this diffuser will deliver the gas at 240 kpa and 52 m/s. assuming variable specific heats, determine: (a) the diffuser exit temperature (k) (b) if the process is reversible, irreversible, or impossible. (c) if irreversible, the entropy generation rate for the gas (kj/kg. k).