Răspuns:
Explicație:
2Na + Cl2= 2NaCl a= Na b= NaCl
2NaCl + H2SO4 = Na2SO4 + 2HCl c= Na2SO4
Na2SO4 + BaCl2= BaSO4 + 2NaCl d= BaSO4
HCl + AgNO3 = AgCl + HNO3 e=AgNO3
f= HNO3
c.
5moli xmoli
2Na + Cl2 = 2NaCl
2moli 2moli
x= 5 . 2 : 2= 5 moli NaCl
MNaCl= 23 + 35,5=58,5-------> 58,5g/moli
m= 5moli . 58,5 g/moli=292,5 g NaCl