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According to the ideal gas law, a 9.939 mol sample of argon gas in a 0.8276...

According to the ideal gas law, a 9.939 mol sample of argon gas in a 0.8276 L container at 500.6 K should exert a pressure of 493.3 atm. What is the percent difference between the pressure calculated using the van der Waals' equation and the ideal pressure? For Ar gas, a = 1.345 L2atm/mol2 and b = 3.219×10-2 L/mol.

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