Estimate the percentage difference between the van der Waals and perfect gas calculations for carbon dioxide undergoing a change from 2.0 bar to 60 bar at 25° C. carbon dioxide: a=3.610 atmdmmol, b=0.0429 dm mol, 1.0atm=1.013×10 Pa, R=8.3145JK mol-1 ( Δ Gvdw- Δ Gideal)/ Δ Gideal = ______%

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