\(n_{Amino\ axit} = a(mol) \to n_{amin} = 3a(mol)\\ n_{HCl} = n_{amino\ axit} + n_{amin} = a + 3a = 0,1.2\\ \Rightarrow a = 0,05\\ Amin : C_nH_{2n+1}NH_2\\ \Rightarrow 0,05.89 + 0,05.3.(14n + 17) = 13,3\\ \Rightarrow n = 3\\ CTPT\ amin : C_3H_9N\\ \%m_{Amin} = \dfrac{0,15.59}{13,3}.100\% = 66,54\%\\ \%m_{Amino\ axit} = 100\% -66,54\% = 33,46\%\)