An equimolar solution of two volatile liquids A of M= 150 g/mol and B(M=200 g/mol)
has vapour pressure 500 torr.If vapour pressure of pure B is 400 torr the fraction of component
A in vapour phase is

'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