\(\begin{array}{l}
{M_{CO{{(N{H_2})}_2}}} = 12 + 16 + 28 + 4 = 60{\rm{ g/mol}}\\
 \Rightarrow {\rm{\% }}{{\rm{m}}_{\rm{N}}}{\rm{ = }}\frac{{28}}{{60}} \cdot 100\%  \approx 46,67\% 
\end{array}\)

\(\begin{array}{l}
{M_{N{H_4}N{O_3}}} = 14.2 + 4 + 16.3 = 80{\rm{ g/mol}}\\
 \Rightarrow {\rm{\% }}{{\rm{m}}_{\rm{N}}}{\rm{ = }}\frac{{28}}{{80}} \cdot 100\%  = 35\% 
\end{array}\)

Vậy hàm lượng đạm (N) trong phân ure cao hơn.