calculate the mass of NaCl (molecular mass = 5.85 mol) to be dissolved in 40 g of water to lower the freezing point by 2degree celsius, assuming that NaCl undergoes complete dissociation.

[ Kf for water = 1.86 kg 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