Răspuns:
CH3-NH2+ CH3-Cl + C2H5-Cl----> (CH3)2NC2H5+ 2HCl
M,CH3NH2=31g/mol
M,(CH3)2NC2H5=73g/mol
1mol CH3NH2.............1mol (CH3)2NC2H5
31g...................................................73g
13,3g..........................................x
x=m=31,3 g
Explicație:
