Question

What are the roles of the substances in the equation

Answer 1

A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. ... For combustion reactions, the technique is to balance the carbon (C) atoms, followed by the hydrogen (H) atoms and then the oxygen (O) atoms.

Hope this gonna help you ;-)

Answer 2

hii, it your answer....