0.5 mole each of two ideal gases A`(C_(v,m)=(5)/(2)R)` and B`(C_(v,m)=3R)` are taken in a container and expanded reversibely and

0.5 mole each of two ideal gases A`(C_(v,m)=(5)/(2)R)` and B`(C_(v,m)=3R)` are taken in a container and expanded reversibely and adibatically , during this process, temperature of gaseous mixture decreased from 350 K and 250 K. Find `DeltaH` (in `"cal"//"mol"`) for the process :
A. `-100R`
B. `-137.5R`
C. `-375 R`
D. None of these

0.5 mole each of two ideal gases A`(C_(v,m)=(5)/(2)R)` and B`(C_(v,m)=3R)` are taken in a container and expanded reversibely and adibatically , during

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