Pls explain the concept in thisThe ans is given 4But I think alkyl halides on reaction with RC OOAg gives ester and it is not even a borodine hunsdiecker reaction because in that reaction bromine is reacted or any other halide is reacted with RCOOAg to give an alkyl halidePls help

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane