Molecules in a sample of a gas move at a variety of speeds. Molecular speed can...
Molecules in a sample of a gas move at a variety of speeds. Molecular speed can be described by the root-mean-square speed of the gas, which is the square root of the average of the squares of the speeds of all the gas molecules.
What is the rms speed of a sample of O2 at 12.49 °C, in m/s?
A typed answer is prefered. Answer should be in significant figures.
Homework Answers
Root mean square speed, v = √(3RT/M)
Where, R = gas constant = 8.314 J/K.mol
T = 12.49°C = 12.49+273.15 K = 285.64 g/mol
M = molar mass of O2 = 32 g/mol
V = √(3×8.314×285.64/32)
= 14.92 m/s
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