The potential energy due to two particles separated by distance ris -- where a and B are constants. Find the distance between the two particles when they form a stable compound. 7B 2a 7B 2a 8ẞ α
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- Subject: physics2. An isolated system consists of three identical, distinguishable atoms. Each atom can have energy 0, ε, 2ε. What are the statistical weights of the macrostates which have total energy of 0, ε and 2ε respectively?* ? 63. During isothermal compression, the internal energy of an ideal gas : a. Decreases b. Can go either way depending on the precise pressures and volumes c. Stays the same d. Increases 64. What is the total internal energy of a sample of 9 moles of air (considered as an ideal gas) at a temperature of 3°C? Assume that the rotational degrees of freedom are fully activated, and that the vibrational modes are "frozen out". (k=1.38 x 10-23 J/K, N-6.022x10²3) 3°C = 273+3 = 276 U= n NAF ( 1₂ KT) (9)(6.022 X 10²²) x 1.38×10²³ x 276) = 1032 a. 1.19 x 105 J b. 9.29 x 104 J c. 7.23 x 104 J d. 5.16 x 104 J 65. What is the average translational kinetic energy per oxygen molecule in this sample? a. 1.2 x 10-20 J b. 9.14 x 10-21 J c. 5.71 x 10-21 J d. 1.54 x 10-20 J 66. Is this kinetic energy the same or different from the nitrogen molecules in the sample? a. Different b. The same 67. What is the rms speed of the oxygen molecules in this sample? (the atomic mass number of oxygen is 15.994, 1 u =…
- 4. Calculate the potential energy of the system of Na* and CI ions when they are at a distance of 4Å.A car tire contains 0.034m^3 of air at a gauge pressure of 2.76x10^5 N/m^2. The composition of air is about 78% nitrogen (N2) and 21% oxygen (O2), both diatomic molecules. How much more internal energy, in joules, does the air in the tire have than the same volume of air has at zero gauge pressure outside the tire? Eint,2 - Eint,1 = _____The Z factor is approximately the same for all gases at the same reduced temperature and reduced pressure.
- 26) A system of two moles of an ideal gas increases its internal energy by 1000 J as it increases in temperature from 300 K to 340 K. There are no changes in bond energy. Which of the following statements is true? A: This gas is monatomic. B: Not enough information given; you need to know how much work was done on the gas. C: This gas is diatomic, with its vibrational modes unfrozen. D: Not enough information given; you need to know how much heat was transferred to the gas. E: This gas is diatomic, with its vibrational modes frozen out.In a vacuum chamber designed for surface-science experiments, the pressure of residual gas is kept as low as possible so that surfaces can be kept clean. The coverage of a surface by a single monolayer requires about 10 19 atoms per m². What pressure would be needed to deposit less than one monolayer per hour from residual gas? You may assume that if a molecule hits the surface, it sticks.M Inbox (44,3 x w Virginia Cor X Frcc Chapter 4 H x Visual session.masteringphysics.com/myct/itemView?assig Apps Getting Started Thomson Reuters o ADP ezLaborManag Ch 07 HW Exercise 7.35 - Enhanced - with Feedback The potential energy of two atoms in a diatomic molecule is approximated by U (r) = a/r-b/r°, where r is the spacing between atoms and a and b are positive constants.