Write a balanced equation for the combustion of liquid penetrate C5H12, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water?
your equation works. However, it is better to use the smallest possible coefficients. Divide your by 2. It still works.
Start by using the 5 carbons in the hydrocarbon to form 5 carbon dioxide. Then use the 12 hydrogens to form 6 waters. Then count up the oxygen atoms needed.
There must be 16 oxygens on the left or reactants to balance the equation. So