(a) Calculate the rms speed of a helium atom at 0°C. 1 m/s (b) Determine how man
ID: 1678601 • Letter: #
Question
(a) Calculate the rms speed of a helium atom at 0°C.1 m/s
(b) Determine how many times per second it would move back andforth across a 7.0 m long room on the average, assuming it madevery few collisions with other molecules.
2 cycles/s Can you please help me solve this problem and show step bystep. It would help me understand it better. Thanks! (a) Calculate the rms speed of a helium atom at 0°C.
1 m/s
(b) Determine how many times per second it would move back andforth across a 7.0 m long room on the average, assuming it madevery few collisions with other molecules.
2 cycles/s Can you please help me solve this problem and show step bystep. It would help me understand it better. Thanks!
Explanation / Answer
Temperature T = 0 oC = 273 K
Molecular mass of helium M = 4 g = 4 * 10 ^ -3 kg
Rms speed v = [ 3RT / M]
Where R = gas constant = 8.314 J / mol K
Plug the values we get v = 1304.71 m / s
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