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Two moles of an ideal gas are held by a ...

Two moles of an ideal gas are held by a piston under 10 atm pressure at 273 K. The pressure is suddenly released to 0.4 atm and the gas is allowed to expand isothermally. Calculate W,q`Deltau` and `DeltaH`.

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The correct Answer is:
(-4358 J, 4358 J, 0,0)
The gas expands irreversibly)
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