Balancing Equation

Today we are gong to talk about how to make the number of atoms of each kind on the relevant side equal to those on the product side

Here are some rules :
1. balance the atoms which only occur in one molecule on each side
2. balance the whole group
3. dont jump all over an equation
4. in an elemental form

Examples~
1. Al + CuCl2 ----> Al2Cl3 + Cu
step 1 : (4)Al + (3)CuCl2 -----> (2)Al2Cl3 + (3)Cu
step 2 : u should check if the molecules on both sides are equal
(4Al , 3Cu, 6Cl = 4Al , 3Cu, 6Cl)

2. KOH + H3PO4 -----> K3PO4 + H2O
step 1 : (3)KOH + H3PO4 ----> K3PO4 + (3)H2O
step 2 : checking
(3K, 7O, 6H, 1P  = 3K, 7O, 6H, 1P)