Question

How do you balance this equation? C3H18+O2 ----------) CO2+H2O

Answer 1

`"Balance mass, balance charge............"`

Explanation:

`C_3H_8 + 5O_2(g) rarr 3CO_2(g) + 4H_2O(l)`

I assume you mean propane, `C_3H_8`?

How does energy transfer in this reaction? Where should you place a `Delta` symbol?

The given reaction represents complete combustion. Shorter hydrocarbons, such as propane, usually undergo complete oxidation.