A standard rotary pump is capable of producing a vacuum on the order of 10-3Torr . What is the single - particle collisional frequency for N2 at this pressure and 288 K ? The collisional cross section of N2 is 4.3\times 10-19m2 Express your answer in reciprocal seconds to one significant figure.
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- What is the total collisional frequency at 298 K for a collection of Ne and He confined to a 1 dm3 container with partial pressure of 0.45 atm Ne and 0.55 atm He?Starting from the definition of Cp and Cv, derive the expression of (Cp-Cv) expressed onlyin measurable quantities. the final answer will be:Starting from the definition of Cp and Cv, derive the expression of (C₁-Cv) expressed only in measurable quantities.
- GNO+UNt what volume of NH3 s, at Standard tempature Hz>5N2+ 6 Hz O 3. tempatire pressur e (STP), is required to reactcoith 15.0g Of NO? a 5.68L 可 7.47L CIO.OL d ll.2LVirial Equation of State The virial equation of state: Z - pVm RT poon B(T) + CVT) 1+ m + D(T) V3 What is the pressure (in bar) of a 5.84 mol sample of helium gas at a volume of 30.7 L and at 100 K? Assume the gas obeys the virial equation of state truncated to second order, and round your answer to the hundredths (0.01) place. At T = 100 K, B = 11.4 cm³/mol for helium.Determine a particular solution u (x, t) for Subject to u(0, t) = 0 = u (L,t); u (x, 0) = 0; a²u at² a²u == x²; 0 Ju (x,0) at = 1 With the general solution u (x,t) = (A cos wx + B sin wx) (C cos wx + D sin wx)
- The highest building in Montreal is the ‘1 square building’, with a height of 203m.The atmospheric pressure in the streets of Montreal is P1 = 9.9 x 104Pa.Suppose air density is constant : ρair= 1,2 kg/m3 and g = 9.8 m/s2. Suppose the rooftop temperature to be T = 298K, and the air composition is 100%N2 molecules. The collision cross-section of N2 molecules is 0.43 nm2.*f. Find the collision frequency. Is it in the order of magnitude that you wereexpecting?Suppose that S is regarded as a function of T and p, show that TdS= C,dT- T(dP/aT)y dV.For a normal phase separation, predict the order of elution of the following compoundsa. n-hexane, n- hexanol, benzene, 1,2-hexadiol, 1,2-pentadiolb. ethyl acetate, diethyl ether, nitrobutane, 2-nitrobutane, 3-methyl-1-nitrobutane, 2-methyl-1-nitrobutane
- Q9 + Show that, for a perfect gas, (US)y= T and (@U/V)₁=-p.A manometer was connected to a bulb containing an unknown gas under slight pressure. The gas was allowed to escape through a small pinhole, and the time for the manometer reading to drop from 75 cm to 50 cm was 52 s. When the experiment was repeated using nitrogen (for which M = 28.02 g mol−1) the same fall took place in 42 s. Calculate the molar mass of the unknown gas. Hint: The pressure changes and, as a consequence, so does the rate of effusion; note, however, that the change is the same in both cases.1. Applying what we learned. Given your data for the initial volume of 350 nm3 calculate the Pz new pressure if the container size increases to 600 nm. Assume the temperature of the container stavs.constant at 300 K. Show work on a hard copy or separate piece of paper. P.V, = R.V2 %3D