Urgent va rog ! Am nevoie la moment !

2Na +S =Na2S
2Na + Cl2 =2NaCl
4Na+O2=2Na2O
2Na +2 H2O=2NaOH +H2
2NaOH +CO2=Na2CO3 + H2O
2NaOH + ZnCl2=2NaCl +Zn(OH)2