how do you balance and what are the answers

Question

46. Balance these equations:
(a) ____Fe(s) + ____O2(g)h____ Fe2O3(s)
(b) ____H2(g) + ____N2(g)h____NH3(g)
(c) ____Cl2(g) + ____KBr(aq)h____Br2(l ) +
____KCl (aq)
(d) ____CH4(g) + ____O2(g)h____CO2(g) +
____H2O(l )

Answer 1

Ensure number of atoms of each element are equal on both sides of chemical equation. Keep in mind valency of each element.

 

(a) 2Fe₂ + 3O₂ -> 2Fe₂O₃

 

(b) 3H₂ + N₂ -> 2NH₃

 

(c) Cl₂ + 2KBr -> 2KCl + Br₂

 

(d) CH₄ + 2O₂ -> CO₂ + 2H₂O

 

:)