Suppose that the root-mean-square velocity Us of water molecules (molecular mass is equal to 18.0 g/mol)...
At what temperature would the root-mean-square speed (thermal speed) of oxygen molecules be 116 m/s? Assume that oxygen approximates an ideal gas. The mass of one O2 molecule is 5.312 x 10-26 kg. The Boltzmann constant is 1.38 × 10-23 J/K.
Suppose that the average velocity (vrms) of carbon dioxide molecules (molecular mass is equal to 44.0 g/mol) in a flame is found to be 9.39 ✕ 102 m/s. What temperature in kelvin does this represent?
Calculate the root mean square velocity, vrms, of a molecule that has a molar mass, M, of 45.02 g/mol at a temperature of 40.56 °C using the equation below. For this calculation the gas constant, R, is expressed as 8.314 J/(mol*K) and the molar mass, M, needs to be converted to kg/mol. vrms=3RTM
At what temperature is the root-mean-square speed of nitrogen molecules equal to the root-mean-square speed of hydrogen molecules at 46 oC? (Hint: The molar mass of hydrogen atoms is 1.008 g/mol and of nitrogen atoms is 14.007 g/mol. The molar mass of H2 is twice the molar mass of hydrogen atoms, and similarly for N2.) The answer is in degree C.
The molecules of a certain gas sample at 375 K have a root-mean-square (rms) speed of 271 m/s. Calculate the most probable speed and the mass of a molecule. Most probable speed: Number 0 m/s Molecular mass: Number
The mean velocity of molecules in a gas is equal to a constant times the square root of the temperature. What happens to the velocity of the molecules at absolute zero? A) The velocity slows to 17m/s B) The velocity is constant. C) The molecules accelerate . D) The molecules stop.
EXAMPLE 6-14 Calculating a Root-Mean-Square Speed Which is the greater speed, that of a bullet fired from a high-powered M-16 rifle (2180 mi/h) or the root-mean-square speed of H2 molecules at 25 °C? Analyze This is a straightforward application of equation (6.19). We must use SI units: R = 8.3145JK mol- and M = 2.016 X 10-kg mol-1. Recall that 1 J = 1 kg m?s Solve Determine urms of H2 with equation (6.19). 3 x 8.3145 kg m’s 2...
Kinetic Molecular Theory of Gases What is the root mean square (rms) velocity of the CO2 molecule at 312 K? 1pts Submit Answer Tries 0/5 What is the most probable velocity of the NH3 molecule at 323 K? 1 pts Submit Answer Tries 0/5
What happens to the root-mean-square velocity of a gas molecule if the temperature of the gas is decreased to the original Kelvin temperature? The velocity of the gas doubles. The velocity of the gas quadruples. The velocity of the gas is quartered. The velocity of the gas is halved.
Calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules at a temperature of 270 K.