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.

4. Given that the collision diameter for CO2 is 0.40 nm, calculate the self-diffusion coefficient of the isotopic 13CO2 gas in a normal CO2 gas system at 105 Pa and 298 K.

Convert the result to ppm (MW for methyl n-amyl ketone = 114.2).  Using the ideal gas constant of 24.45.

Calculate the mean free path of carbon dioxide molecules at 25oC and 1.0 bar, if its collisional cross-section area is 0.52 nm2 .

O1.00g of dryicelie, solid COz)is odded to al Lelash contaring only air (78% N2 oand 22% Oz by volume) at 25C and 112 KPa, We wait for aitthedryice to city Sublimate and equilibrate to He temperadure of its surro prounding. UNDERGRADUATE Relevantmolar masse s; 44.0glmd (ca), 28-0g/mol (Na), 320g lmol (0z) Molar gas onstant: 8.314 cmd kl-0,0821°2'atm/(mol-K) Avogadro's number. 6.022x1023 mol-l vound per Square inch (osi)- C.895 Kla=6.895 J/L=0.06805 atm a) What b)What is the total pressure inside of Pressures of three gases, N2 Oz COz? the flask? are the partial How obesthe average speed of CO2 Compare to that of O2? What about N2 to 02? Hint:/2 (Mv-)=3/2 RT d IF the of the ga ses change? velocity temperature was doubled, how wold the

Convert the result to ppm (MW for methyl n-amyl ketone = 114.2). Note: Use the ideal gas constant of 24.45.

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What is the value of C_p for Cl_2, vapor using the full statistical theory at 298 K. v_0 = 559.7 cm^-1

Given that   ln(A1) = ln(A0) – kt1 ……….. (i) ln(A2) = ln(A0) – kt2 ……….. (ii) Where A1 = A0 - x1               A2 = A0 - x2               Y = x2 – x1 Prove  that      x(1)={Ao-[y/(1-e^-k(t2-t1)]}                                                                     Using SOUND, BALANCED NUCLEAR EQUATION/REACTION AND PRINCIPLE ONLY, explain   “How does KI work to help mitigate the effect of exposure to radiation?” http://www.thestar.com/news/article/954546--radiation-fears-spark-run-on-iodide-pills                                                                               ®                                                                             ®                                                                             ®                 “the SOURCE OF HEAT that resulted in the melt-down at the Fukushima-nuclear-reactor?” [Actual balanced nuclear equations showing heat generated or absence of certain things required for full point]…

Gallium melts just above room temperature and is liquid overa very wide temperature range 130–2204 °C2, which means itwould be a suitable fluid for a high-temperature barometer.Given its density, dGa = 6.0 g>cm3, what would be the heightof the column if gallium is used as the barometer fluid andthe external pressure is 9.5 * 104 Pa?