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Question- Calculate the pressure exerted by Ar for a molar volume of 1.31 L mol-1 at 426 K using the van der Waals equation of state. The van der Waals parameters a and b for Ar are 1.355 bar dm6 mol-2 and 0.0320 dm3 mol-1, respectively. Is the attractive or repulsive portion of the potential dominant under these conditions?

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