What is the root-mean-square velocity vrms for atoms in a Neon lamp, assuming their tempera- ture is 2500 K? (The molar mass of Neon is 20.1797g/mol)
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- Find the ratio f(vp)/f(vrms) for hydrogen gas ( M=2.02 g/mol) at a temperature of 77.0 K.A sample of argon gas is at a pressure of 1.5 x 105 Pa and a temper- ature of 350 K. (a) Determine the number of argon atoms per unit volume. (b) Estimate the speed of the argon atoms between collisions. (c) Estimate the number of collisions that a single atom of argon makes per second. The diameter of an argon atom is approxi- mately 3.4 x 10-10 m.What is the RMS speed of Helium atoms when the temperature of the Helium gas is 312.0 K? (Possibly useful 1.66x10-27 kg, Boltzmann's constants: the atomic mass of Helium is 4.00 AMU, the Atomic Mass Unit is: 1 AMU constant is: kg = 1.38×10-23 J/K.) kB Submit Answer Tries 0/12 What would be the RMS speed, if the temperature of the Helium gas was doubled? Submit Answer Tries 0/12 =
- The escape velocity from the Moon is much smaller than that from the Earth, only 2.38 km/s. At what temperature would hydrogen molecules (molar mass is equal to 2.016 g/mol) have a root-mean-square velocity vrms equal to the Moon’s escape velocity?The atomic and molecular rms speeds of gases, vrms, are usually quite large, even at low temperatures. What is vrms, in meters per second, for helium atoms at 4.8 K (which is close to the point of liquefaction)? Numeric : A numeric value is expected and not an expression.vrms = __________________________________________1. The figure shows the natural loga- rithm of the particle density of air (p = 1.225 kg m-3 at h = 0) for a constant temperature. Given that the linear fit to the data is In(n) = 58.533 at h = 0 and In(n) 57.386 at h = 10ª m, stating any assumptions used, 10 2000 4000 6000 8000 Height, h [m] (a) calculate the average mass of an air particle, (b) determine the temperature of the air. Number density, In(n) [m] 57.5 58 58.5
- Two vessels X & Y of volumes 10x10-4 m3 and 5x10-4 m3 connected by a tube of negligible volume and kept at temperatures of 400 K and 200 K respectively, contain the same ideal gas. What is the ratio of nX : nY?In an interstellar gas cloud at 50.0 K, the pressure is 1.00 * 10-8 Pa. Assuming that the molecular diameters of the gases in the cloud are all 20.0 nm, what is their mean free path?What is the root-mean-square speed, in units of m/sec, of monatomic Ne atoms at a temperature of 24.1°C?
- The escape velocity of any object from earth is 11.2 km/s. a) express this speed in m/s and km/h. speed, m/s: speed,km/h: b) at what temperature would oxygen molecules (molecular mass is equal to 32 g/mol) have an average velocity, v rms, equal to earths escape velocity 11.2km/s? temperature: KProblem 3: Ihe escape speed of any object from Earth is around 11.1 km/s. > A At what temperature, in kelvins, would oxygen molecules (whose molar mass is equal to 32.0 g/mol) have an rms speed vms equal to Earth's escape speed? T= sin() cos() tan() 7 9. HOME E A 4 cotan() atan() asin() acos() acotan() sinh() 1 3 cotanh() ODegrees O Radians cosh() tanh() + END Vol BACKSPACE DEL CLEAR Submit Feedback I give up! HintThe atomic and molecular rms speeds of gases, vrms, are usually quite large, even at low temperatures. What is vrms, in meters per second, for helium atoms at 4.95 K (which is close to the point of liquefaction)?