Root mean square of Gas molecules 0.5km/sec the velocity of gas molecules with twice molecular weight and half the absolute temperature ?
Answers
Gases consist of atoms or molecules that move at different speeds in random directions. The root means square velocity (RMS velocity) is a way to find a single velocity value for the particles. The average velocity of gas particles is found using the root mean square velocity formula
μrms = (3RT/M)½
where
μrms = root mean square velocity in m/sec
R = ideal gas constant = 8.3145 (kg·m2/sec2)/K·mol
T = absolute temperature in Kelvin
M = mass of a mole of the gas in kilograms.
Really, the RMS calculation gives you root mean square speed, not velocity. This is because velocity is a vector quantity, which has magnitude and direction. The RMS calculation only gives the magnitude or speed.
The temperature must be converted to Kelvin and the molar mass must be found in kg to complete this problem.