This discussion is now closed.
Check out other Related discussions
- atomic structure chemistry a level question
- Isaac physics G2.6 a level physics thermodynamics
- Chemistry alevel homework help.
- AS level chemistry Isaac Physics help please
- Urgent chemistry help
- Chemistry A-LEVEL percentage atom economy HELP
- Physics Help
- chem question
- derive expressions for the charles law dv/dt and the Gay-Lussac law, dT/dP, for an id
- Urgently wanted takeover tenancy in private student accommodation Nottingham
- Difference between petroleum engineering and oil & gas engineering (Masters)
- 2023 AS chem paper ocr
- OCR A-Level Chemistry- Amounts of Substance- The Ideal Gas Equation
- Physics Pressure
- Msc business management or sustainable business
- AS chem unit 1 question
- job application to mcdonalds
- alevel chem ideal gas equation question
- Accommodation on campus at Herts
- A level physics nuclear question
Ideal gas.
okay, from the expression pV = NKT
I'm supposed to show <kinetic energy> = (3/2) KT
p = (1/3)rho <c^2>
(1/3)rho <c^2> V = NKT
(1/3)m <c^2> = NKT
(2/3)(1/2)m<c^2> = NKT
(1/2)m<c^2> = (3/2)NKT
How do I get rid of the N?
I'm supposed to show <kinetic energy> = (3/2) KT
p = (1/3)rho <c^2>
(1/3)rho <c^2> V = NKT
(1/3)m <c^2> = NKT
(2/3)(1/2)m<c^2> = NKT
(1/2)m<c^2> = (3/2)NKT
How do I get rid of the N?
N is the number of gas molecules i believe, so for a single molecule N=1 and the average kinetic energy will be (3/2)[1]KT.
You might also want to check this:
http://en.wikipedia.org/wiki/Kinetic_theory#Temperature_and_kinetic_energy
You might also want to check this:
http://en.wikipedia.org/wiki/Kinetic_theory#Temperature_and_kinetic_energy
andrewlee89
okay, from the expression pV = NKT
I'm supposed to show <kinetic energy> = (3/2) KT
p = (1/3)rho <c^2>
(1/3)rho <c^2> V = NKT
(1/3)m <c^2> = NKT
(2/3)(1/2)m<c^2> = NKT
(1/2)m<c^2> = (3/2)NKT
How do I get rid of the N?
I'm supposed to show <kinetic energy> = (3/2) KT
p = (1/3)rho <c^2>
(1/3)rho <c^2> V = NKT
(1/3)m <c^2> = NKT
(2/3)(1/2)m<c^2> = NKT
(1/2)m<c^2> = (3/2)NKT
How do I get rid of the N?
I'm used to calling K R so in this post I shall refer to K as R, just because I'll get confused if I don't!
First recall that:
where is the Avogadro constant.
Now:
Therefore:
Now, note that:
where is the mass of one of the particles.
Since is constant...
Phew!
hey thanks guys
Its LaTeX
Look here for more info:
http://www.thestudentroom.co.uk/wiki/LaTeX
Look here for more info:
http://www.thestudentroom.co.uk/wiki/LaTeX
Related discussions
- atomic structure chemistry a level question
- Isaac physics G2.6 a level physics thermodynamics
- Chemistry alevel homework help.
- AS level chemistry Isaac Physics help please
- Urgent chemistry help
- Chemistry A-LEVEL percentage atom economy HELP
- Physics Help
- chem question
- derive expressions for the charles law dv/dt and the Gay-Lussac law, dT/dP, for an id
- Urgently wanted takeover tenancy in private student accommodation Nottingham
- Difference between petroleum engineering and oil & gas engineering (Masters)
- 2023 AS chem paper ocr
- OCR A-Level Chemistry- Amounts of Substance- The Ideal Gas Equation
- Physics Pressure
- Msc business management or sustainable business
- AS chem unit 1 question
- job application to mcdonalds
- alevel chem ideal gas equation question
- Accommodation on campus at Herts
- A level physics nuclear question
