calculate the mas of NACl (molar mass = 58.5 g mol) to bedissolved in 40 g of water to lower the freezing point by

2 degree celsius, assuming that NACl undergoes complete dissociation. [ Kf for water = 1.86 K mol]

'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