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2. A rigid tank contains 1Kmol of Ar gas at 220K and 5Mpa. A valve is now opened and 3Kmol of N2 gas at 190K

2. A rigid tank contains 1Kmol of Ar gas at 220K and 5Mpa. A valve is now opened and 3Kmol of N2 gas at 190K and 8Mpa is allowed to enter the tank. The final mixture temperature is 200K. Evaluate the pressure of the mixture if; i. The gas mixture is treated as ideal. ii. The gas mixture is under real gas approximation

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