• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Root mean square

  • Thread starter C-A-L
  • Start date
I solved on my own the work below is incorrect.


1. The problem statement, all variables and given/known data
A sealed 500ml flask contains oxygen gas at a temperature of 27 degrees Celsius.
a) Calculate the root mean square speed of an oxygen molecule in the flask?
b) Calculate the average kinetic of an oxygen molecule in the flask?

2. Relevant equations
rms=square root (3r T/M)


3. The attempt at a solution

a) square root of (3*8.314)*(300/32)
=15.3 m/s
Is this the correct way to go about this question?


b) KE average= 1/2 M (v)2
= 1/2*(32)*(15.3)2
=3.75*103 N/m

I do have one more question but I would like to know if I did these two problems correctly.
Thank you for your time greatly appreciated.
 
Last edited:

Want to reply to this thread?

"Root mean square" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads

Top