A 1-m3 tank containing air at 25°C and 500 kPa is connected through a valve to another tank containing5 kg of air at 35°C and 200 kPa. Now the valve is opened, and the entire system is allowed to reach thermal equilibrium with the surroundings, which are at 20°C. Use R=287 J/kg*K. a. Determine the initial mass of air in the first tank. b. Determine the volume of the second tank c. Determine the final equilibrium pressure of air.

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