Mendeleev
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Mendeleev · Reaction

Combustion of methane

Combustion of methane: balanced equation with an atom-by-atom conservation check.

Reaction
CH4 + 2O2 → CO2 + 2H2O
ElementLeftRight
H44
C11
O44

Coefficients in front of formulas set the reaction proportions. They do not change the chemical formulas themselves.

An equation is balanced when every element has the same total number of atoms on the left and on the right.