$$2C_{10}H_{22} + 31O_2 \rightarrow 20CO_2 + 22H_2O$$
In this equation, decane (C10H22) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The coefficients in front of each compound indicate the relative number of moles of each substance involved in the reaction. For example, 2 moles of decane react with 31 moles of oxygen to produce 20 moles of carbon dioxide and 22 moles of water.