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A sample consisting of `1mol` of a mono-atomic perfect gas `(C_(V) = (3)/(2)R)` is taken through the cycle as shown. `DeltaU` for the process `(2 rarr 3)` isA. `0.00J`B. `+3.40 kJ`C. `-3.40 kJ`D. None of these |
Answer» In conversion from state `2` to state `3` `DeltaT = T_(2) - T_(1) = 273 - 546 =- 273 K` `C_(V) = (3)/(2)R` `:. DeltaU = nC_(V) DeltaT = 1 xx (3)/(2) xx 8.314 xx (-273)` `=- 3.40 xx 10^(3)J` |
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