Problem air in a tank is at 300 kpa 400 k with a volume of, Ask an Expert

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Problem: Air in a tank is at 300 kPa, 400 K with a volume of 2 m³. A valve on the tank is opened to let some air escape to the ambient to a final pressure inside of 200 kPa.

Part A: Find the final temperature and mass assuming a reversible adiabatic process for the air remaining inside the tank.

Please show all work and steps I am really trying to learn this for my exam.

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