Question

Review this chemical equation: O2 + CH4---> CO2 + H2O Which answer best explains what must be done to make this equation comply with the law of conservation of mass?

Answer 1

To make this equation right, coefficients must be added in front of molecules, so number of atoms in right and left are equal.
2O₂ + CH₄ = CO₂ + 2H₂O
How, you have 4 atoms of oxygen,1 atom of carbon and 4 atoms of hydrogen on both side of reaction.