The van der Waals coefficients of monatomic argon gas are a=0.1345a=0.1345 m66Pa/mol22 and b=32.19×106b=32.19×106 m33/mol. Calculate the correction to the internal energy of 3 mole of this monatomic van der Waals gas compared to that of 3 mole of a monatomic ideal gas at density 200 mol/L .

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