\( X \) g of ethanamine was subjected to reaction with \( \mathrm{NaNO_2/HCl} \) followed by hydrolysis to liberate \( \mathrm{N_2} \) and \( \mathrm{HCl} \). The \( \mathrm{HCl} \) generated was completely neutralized by \( 0.2 \) moles of \( \mathrm{NaOH} \). \( X \) is \( \_ \_ \_ \_ \_ \) g.
