Balancing Equations (Write On Paper If Needed)

Question 1

How do you balence an equation?

Answer 1

Formulae never change. To balance an equation numbers may only be put in front of a formula.

Question 2

Balence this equation:
Magnesium combines with oxygen to form magnesium oxide.
Mg+O2 ~~> MgO
(Write on paper if needed)

Answer 2

2Mg+O2 ~~> 2MgO

Left Side Right Side
2 1 Mg 1 2
2 O 1 2

Question 3

Balance this equation:
Potassium combines with chlorine to form potassium chloride.
K+Cl2 ~~> kcl
(Write on paper if needed)

Answer 3

2K+Cl2 ~~> 2kcl

Left Side Right Side
2 1 K 1 2
2 Cl 1 2

Question 4

Balance this equation:
NHO3+Ca(OH) ~~> Ca(NO3)+H2O
(Write on paper if needed)

Answer 4

2NHO3+Ca(OH)2 ~~> Ca(NO3)2+2H2O

Left Side Right Side
2 1 N 2
4 3 H 2 4
8 5 O 7 8
1 Ca 1

Question 5

Balance this equation:
CH4+O2 ~~> CO2+H2O
(Write on paper if needed)

Answer 5

CH4+3O2 ~~> CO2+2H2O

Left Side Right Side
4 H 2 4
1 C 1
6 4 2 O 4 6