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