The van der Waals equation of state is For carbon dioxide, a = 0.3640 Pa m 6

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The van der Waals equation of state is

n?a ( – nb) = nRT. V2

For carbon dioxide, a = 0.3640 Pa m6 molˆ’1 and b = 4.267 × 10ˆ’5 m3 molˆ’1. Find the pressure of 0.7500 mol of carbon dioxide if V = 0.0242 m3 and T = 298.0 K. Find the uncertainty in the pressure if the uncertainty in the volume is 0.00004 m3 and the uncertainty in the temperature is 0.5 K. Assume that the uncertainty in n is negligible. Find the pressure predicted by the ideal gas equation of state. Compare the difference between the two pressures you calculated and the expected error in the pressure.

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