Răspuns:
m=224gCaO
m,CaCl2 ?
M,CaO= 56g/mol
M,CaCl2= 111g/mol
niu,CaO= m/M=224g/56g/mol=4mol
CaO + 2HCl----:> CaCl2 + H2O
1mol........................1mol
4mol..........................x
x=niu= 4mol CaCl2
m= niuxM= 4molX111g/mol= 444gCaCl2
Explicație: