2Na + Cl2 -> 2NaCl
m=46 g Na => 2 moli Na
a) n NaCl = 2 moli NaCl => m= 117g NaCl
b) n Cl =1 mol
c) NA = 1× 6.022 +
[tex] {10}^{23} [/tex]
molecule Cl (numarul lui Avogadro)
