Question

which chemical equation are not balanced?​

Answer 1

$\huge \mathfrak\blue{Answer}$

Chemical reactions must be balanced, or in other words, must have the same number of various atoms in the products as in the reactants. If a chemical reaction is not balanced, no information about the relationship between products and reactants can be derived.

Answer 2

Answer:

On the product side (right side), there are one atom of carbon, two atoms of hydrogen, and three atoms of oxygen. Therefore, the equation does not satisfy the law of conservation of mass, and is not balanced.