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ricof
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Homework Statement
A closed system comprising a cylinder and frictionless piston contains 1kg of a perfect gas of which molecular mass is 26. The piston is loaded so that the pressure is constant at 200kPa. Heat is supplied causing the gas to expand from 0.5m^3 to 1m^3. Calculate heat supplied
Homework Equations
w = int-(PdV)
PV = nRT
q = du - w
The Attempt at a Solution
I have worked out w as 100kJ by doing PdV = 200kPa x 0.5
Oh and Cp = 1.08 kJ/kg/K
Now am stuck.