Răspuns :
260 g xg
Zn + 2HCl = ZnCl2 + H2
65g 136g
Se calc. masele moleculare
MHCl=1+ 35,5=36,5------> 1mol=36,5g
MZnCl2=65+ 2.35,5=136 -----> 1mol=136g
Se calc. xdin ec.
x=260.136:65=544 g ZnCl2
260 g xg
Zn + 2HCl = ZnCl2 + H2
65g 136g
Se calc. masele moleculare
MHCl=1+ 35,5=36,5------> 1mol=36,5g
MZnCl2=65+ 2.35,5=136 -----> 1mol=136g
Se calc. xdin ec.
x=260.136:65=544 g ZnCl2