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Unformatted text preview: material C p h Joule molK i ice 38.08 water 75.33 steam 37.47 ‹ 0.1 moles of oxygen are contained in a 5 litre vessel at 200K. Assume that O 2 and N 2 behave ideally. (a) What is the pressure exerted by the gas? (b) We now double the absolute temperature. What is the new pressure in atm ? (c) 0.2 moles of N 2 are added to the vessel in problem a. Calculate the partial pressure of each gas and the total pressure. 2–15 › Assuming that Ar gas obeys the van der Waals equation with a = 1.35 atm L 2 mol 2 and b = 0.0322 L mol , calculate the Ar pressure in atm at 200 K for molar volumes of 1 L mol and 0.1 L mol . NOTE: Modify VdW pressure equation for use with molar volume. ﬁ How much energy is required to heat 2 dL of water from 20 ◦ C to 120 ◦ C steam at constant pressure? NOTE: Don’t forget the latent heat involved in the phase change. 2–16...
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 Winter '09
 scotty
 Thermodynamics, pH, mol Latent Heat, atm mol mol2

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