Identify acidic amino acid from following (represented by using three letter symbols).

What is the number of moles of ionisable $\mathrm{Cl^-}$ ions in a coordinate complex if it forms two moles of $\mathrm{AgCl}$ when treated with silver nitrate solution in excess?

Identify the number of moles of H atoms present in n moles of organic compound represented as

What is the number of chiral carbon atoms in threose?