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- (a) Using data from the previous problem, find the mass of nitrogen, oxygen, and argon in 1 mol of dry air. The molar mass of N2 is 28.0 g/mol, that of O2 is 32.0 g/mol, and that of argon is 39.9 g/mol. (b) Dry air is mixed with pentane 5 H12, molar mass 72.2 g/mol), an important constituent of gasoline, in an air-fuel ratio of 15:1 by mass (roughly typical for car engines). Find the partial pressure of pentane in this mixture at an overall pressure of 1.00 atm.If A⃗ ⋅C⃗ =B⃗ ⋅C⃗ A→⋅C→=B→⋅C→, is it necessarily true that A⃗ =B⃗ A→=B→? Yes NoQ /Find the next integral: E V 2m(E – %x)dx h a
- P2 657°C - Isothermal 2.0 37°C 1 atm 3 0- V(L) The figure (not to scale) shows a pV diagram for 4.7 g of helium gas (He) that undergoes the process 1→ 2 → 3. The ideal gas constant is R = 8.314 J/mol · K = 0.0821 L · atm/mol · K, and the atomic weight of helium is 4.0 g/mol. What is the value of V3 in liters? Please give your numerical answer with one decimal place.2) The potential energy between a pair of neutral atoms or molecules is very well approximated by the Lennard-Jones Potential, given by the expression, 12 V(r) = 4ɛ where & and o are constants, and r is the distance between the molecules. The potential energy is plotted in the figure below. The vertical axis is in units of ɛ, while the horizontal axis is in units of o. Molcular Bond Eaery 2 1.25 1.5 1.75 2. 2.25 25 2.75 3.25 -1: -2- Distance W 3.Derive the following equation? E 3 + - KT In 2 4 me E N. -In( N. KT E f + Substituting ( N.) and ( N,): KT 3 2T me N. = 2(- h? ΚΤ 3 2T m . N, = 2(- || h? gives: E 3 KT In 4 E m e
- Compare temperatures TA and Tc. p (atm) 5 4 3 2 1 0 1 ● TA TC TA = TC not enough information → V (m³)2) IF A = 3 Gx + 4ay - 20z and = ax -2 ay t 5 Qz. Find e AB MoreP2 657°C Isothermal 2.0 atm 37°C 3. V(L) V3 The figure (not to scale) shows a pV diagram for 3.3 g of helium gas (He) that undergoes the process 1 2 → 3. The ideal gas constant is R = 8.314 J/mol K = 0.0821 L· atm/mol K, and the atomic weight of helium is 4.0 g/mol. What is the %3D value of V3 in liters? Please give your numerical answer with one decimal place.
- Q1 : limx→1 x(1 – cos-)The heat engine shown in the figure uses 2.0 mol of a monatomic gas as the working substance. (Figure 1) Figure p (kPa) 600 400 200 0 0 0.025 0.050 V (m³) 1 of 1 Part A Determine T₁, T2, and T3. Enter your answers numerically separated by commas. Express your answer using two significant figures. T₁, T2, T3 = 600,1800,1200 K Submit Previous Answers Correct Part B4. Compute the linear attenuation coefficient of iron oxide (Fe304) at 1 MeV. Use the figures provided and the following information; µc = (Opp x Z?), PPi = g/mole, AFe NeocZ, µpe = Nope (Ope X 2"), Mрp — Nopр 11.3 g/cm³, pre304 = 5.8 g/cm³, Zp = 82, ZFe = 26, Zo = 8, Ap6 = 207.19 = 55.85 g/mole, Ao = 16 g/mole. (Note: µFe304 = µFe+ µ0).