Question

Balance the following chemical equation a) Na + O2 --> Na2O b) H2 + Cl2 --> HCl c) Zn + HCl --> ZnCl2 + H2 d) Ca + O2 --> CaO​

Answer 1

Answer:

A) 4Na+O2-->2Na2O

B) H2+Cl2-->2HCl

C) Zn+2HCl-->ZnCl2+H2

D) 2Ca+O2-->2CaO

Enjoy ;)