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10
votes
The actual proof of δW=PdV
δW=Fδx=FδVA=FAδV=PδV
4
votes
Why are temperature and specific volume independent properties?
Let all air out of a balloon (air volume expands); is the air hotter?
Temperature and volume are independent. But you might be confusing them with pressure. … The ideal-gas-law tells the relationship (for idealized gas):
pV=nRT
p being pressure, V volume, n amount of sumbstance (number of molecules in moles), R the gas constant and T temperature …
2
votes
Accepted
When is ΔU=nCvΔT true?
Internal energy is a category that encompasses thermal energy, elastic energy, bonding energy and other phase-related energy as well as other chemical energies etc.
Of all these, temperature is only a …
1
vote
Why are dT2 and dT3 negligibly small?
Because dT is a tiny - almost infinitely tiny - value. A tiny, tiny change in temperature. You say that "temperature changes can be bigger", and that is true, but then they will not be called dT …
1
vote
Accepted
Volume per atom - Meaning
The volume per atom is just the volume which one atom takes up in the structure. Even though one atom doesn't actually fill this much, it still needs all this space to be in this structure. …