Problem: The volume of  1.000 mol of neon at a pressure of 500.0 atm and a temperature of 355.0 K was calculated to be 5.83×10−2 L using van der Waals equation and 7.08×10−2 L using the ideal gas equation.  Explain why the two values are different.

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Gases behave non-ideally at high pressures and low temperatures.

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The volume of  1.000 mol of neon at a pressure of 500.0 atm and a temperature of 355.0 K was calculated to be 5.83×10−2 L using van der Waals equation and 7.08×10−2 L using the ideal gas equation.  Explain why the two values are different.

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