A gaseous mixture consists of 75 percent methane and 25 percent ethane by mass. 28,000 m3...

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Mechanical Engineering

A gaseous mixture consists of 75 percent methane and 25 percentethane by mass. 28,000 m3 of this mixture is trapped ina geological formation as natural gas at 150°C and 14 MPa. Thisnatural gas is pumped 2000 m to the surface. At the surface, thegas pressure is 140 kPa and its temperature is 90°C. Using Kay’srule and the enthalpy-departure charts, calculate the work requiredto pump this gas.

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