Question

how can we balance the equations

 

Answer 1

You have to put equal number of atoms on both sides of the reaction.its only possible by knowing atomic masses and atomic number

Answer 2

first u check what substances in the reactant side and the product side is not equal then u balance them by making those substances equal in number.example
H₂O-H₂+O₂
THIS EQUATION IS NOT BALANCED
BALANCED EQUATION IS
2H₂O-2H₂+O₂