M,HCl= 36,5g/mol
calculez moli de acid in masa data
niu(mol)= m/M= 73/36,5mol= 2molHCl
calculez moli si masa AgCl din ecuatia chimica
1mol...............................................1mol
HCl + AgNO3----> HNO3 + AgCl↓
2mol....................................................x=2mol AgCl
m= niuxM= 2X(108gAg +35,5gCl)=......................calculeaza