A piston-cylinder device initially contains 0.2 kg of steam at 200 kPa and 300oC. Now, the steam is cooled at constant pressure until it is at 150oC. Determine the volume change of the cylinder during this process using the compressibility factor and compare the result to the actual value.

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Steam 0.2 kg 200 kPa 300 C FIGURE P3-120