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The volume of 0.850 kg of argon (MW = 40) in a closed piston-cylinder device is...

The volume of 0.850 kg of argon (MW = 40) in a closed piston-cylinder device is initially 0.500 m3. Now the gas is expanded at a constant pressure of 165.0 kPa to a volume of 1.30 m3. Note: The IUPAC sign convention for work is used. Work into the system has a positive value. What is the moving boundary work? kJ What is the heat interaction? Assume Cp(T)= 21 kJ/kmol·K. kJ

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