Challenge questions: balance the equations below. nano3 + pbo → pb(no3)2 + na2o ca3p2 + h2o → (oh)2 + ph3 + co → + co2 + o2 → no2 + h2o + → +c3h6o2 + o2 → co2 + h2o

To balance the chemical equations, the sum of each atom should be equal in both side of the arrow. Hence the answers can be written as;
2NaNO₃ +  PbO → Pb(NO₃)₂+ Na₂O
Ca₃P₂+ 6H₂O → 3Ca(OH)₂ + 2PH₃
Fe₂O₃ + 3CO → 2Fe + 3CO₂
4NH₃ + 7O₂ → 4NO₂ + 6H₂O
4FeS + 7O₂→ 2Fe₂O₃ + 4SO₂
2C₃H₆O₂ + 7O₂ → 6CO₂ + 6H₂O

The balanced equation are as follows:

2NaNO3 + PbO → Pb(NO3)2 + Na2OCa3P2 + 6H2O → 3Ca(OH)2 + 2PH3Fe2O3 + 3CO → 2Fe + 3CO24NH3 + 7O2 → 4NO2 + 6H2O4FeS + 7O2 → 2Fe2O3 + 4SO22C3H6O2 + 7O2 → 6CO2 + 6H2O

BALANCED CHEMICAL EQUATION:

A balanced equation is an equation in which the number of atoms of each element on both sides of the equation. To balance a chemical equation, we make use of coefficients, which are numbers placed in front of elements or compounds. The balanced form of the following equations using coefficients are: 2NaNO3 + PbO → Pb(NO3)2 + Na2OCa3P2 + 6H2O → 3Ca(OH)2 + 2PH3Fe2O3 + 3CO → 2Fe + 3CO24NH3 + 7O2 → 4NO2 + 6H2O4FeS + 7O2 → 2Fe2O3 + 4SO22C3H6O2 + 7O2 → 6CO2 + 6H2O

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