- #1
s943035
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We known [tex]U=3/2nRT[/tex] (monatomic ideal gas), just depends on temperature.
Most texts assert connecting U and Q with constant volume condition
and say"[tex]\Delta U = nCv\Delta T[/tex] for any process because of internal energy only depends on temp".
I think that statement is very strange.
Deriving the first law to [tex]\Delta U = nCp\Delta T + nR \Delta T = n\Delta T (Cp + R)[/tex]. Well, this equation also just depends on temperature.
Why not both heat and work in other condition to determine internal energy? Maybe kinetic relation is derived from constant volume?
Most texts assert connecting U and Q with constant volume condition
and say"[tex]\Delta U = nCv\Delta T[/tex] for any process because of internal energy only depends on temp".
I think that statement is very strange.
Deriving the first law to [tex]\Delta U = nCp\Delta T + nR \Delta T = n\Delta T (Cp + R)[/tex]. Well, this equation also just depends on temperature.
Why not both heat and work in other condition to determine internal energy? Maybe kinetic relation is derived from constant volume?
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