Use the Peng$-$Robinson EOS to answer this problem.

What are the molar volumes $(c\frac{m^3}{m}$ole$)$ for the physically realistic stable root of ethylene gas at the

given conditions? Note: Some mathematical solutions to the cubic may not be physically realistic.

a$)T=250K$ and $P=1$MPa

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b$)T=250K$ and $P=3$MPa

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b$)T=250K$ and $P=170$MPa

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b$)T=250K$ and $P=175$MPa

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b$)T=250K$ and $P=200$MPa