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[3] A frictionless piston-cylinder device contains 10 lbm of steam at 80 psia and 330F. Heat is now transferred to the steam until the

[3] A frictionless piston-cylinder device contains 10 lbm of steam at 80 psia and 330F. Heat is now transferred to the steam until the temperature reaches 420F. If the piston is not attached to a shaft and its mass is constant, determine the work done by the steam during this process. [4] Using the ideal gas equation of state derive the following relation 15 points 30

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