quick question about thermal energy Watch

tazmaniac97
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what does this line about covalent bonds mean?

very strong~ 30 to 100 x 10-20J >> KBT
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username913907
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about x to y Joules which is very much greater than KT (available thermal energy)
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tazmaniac97
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(Original post by JMaydom)
about x to y Joules which is very much greater than KT (available thermal energy)
What's KT, is it the same for all molecules and what does this value depend on?
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username913907
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well what is KB and what is T? I think you know those
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tazmaniac97
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(Original post by JMaydom)
well what is KB and what is T? I think you know those
All I know is they're both to do with thermal energy

:confused:
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username913907
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Oh comon... If you're an undergraduate and you don't know KB is the boltzmann constant?........

T is just the temperature in Kelvin.

KT is approximately the thermal energy available to the system so if the energy difference between 2 states is much greater than KT then only the ground state will be populated to any extent.
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tazmaniac97
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(Original post by JMaydom)
Oh comon... If you're an undergraduate and you don't know KB is the boltzmann constant?........

T is just the temperature in Kelvin.

KT is approximately the thermal energy available to the system so if the energy difference between 2 states is much greater than KT then only the ground state will be populated to any extent.
I'm an undergrad pharmacy student, so we don't do chemistry in that much detail (mostly biology), last year for A levels we learnt about the Boltzmann distribution, I've never come across Boltzmann constant though. I researched it and know what it is now.

Just to clarify, when you say KT are you referring to KBT? Whats the ground state?
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