The van der Waals equation of state gives better accuracy than the ideal gas equation of state. It is

where a and b are parameters that have different values for different gases and where V_m = V/n, the molar volume. For carbon dioxide, a = 0.3640 Pa m⁶ mol^–2, b = 4.267 × 10^–5 m³ mol^–1. Calculate the pressure of carbon dioxide in pascals, assuming that n = 0.13678 mol, V = 10.00l, and T = 298.15 K. Convert your answer to atmospheres and torr.

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a P+ V2 v2) (Vm – b) = RT, m