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A tank containing CO2 at T1=125 o C and P1=52 bar is vented reversibly until the temperature in the tank drops down to To=25 o

A tank containing CO2 at T1=125 o C and P1=52 bar is vented reversibly until the temperature in the tank drops down to To=25 o C. Assume the heat loss from the tank to the environment is negligible and that CO2 follows the van der Waals Equation of State. Calculate the fraction of the initial mass remaining in the tank.

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