Balance the reaction and answer the questions. \[ \mathrm{C}_{2} \mathrm{H}_{6}+-\mathrm{O}_{2} \rightarrow-\mathrm{CO}_{2}+\ldots \mathrm{H}_{2} \mathrm{O} \] D \( 2,4,3,2 \) PART B The reaction here shows a simple chemical reaction involving the combustion of ethane \( \left(\mathrm{C}_{2} \mathrm{H}_{6}\right) \), a fuel, in the presence of oxygen gas to for water and carbon dioxide \( \left(\mathrm{CO}_{2}\right) \). What is the primary source of hydrogen atoms in the water molecule on the product side? A Hydrogen from the atmosphere reacts with water to form oxygen B Carbon atoms recombine with oxygen to form hydrogen atoms. C Hydrogen atoms in ethane \( \left(\mathrm{C}_{2} \mathrm{H}_{6}\right) \) form new bonds with oxygen to form water. D Oxygen atoms from the reactant lose protons and electrons to form hydrogen.

The balanced equation for the combustion of ethane is as follows: \[ 2 \, \mathrm{C}_2 \mathrm{H}_6 + 7 \, \mathrm{O}_2 \rightarrow 4 \, \mathrm{CO}_2 + 6 \, \mathrm{H}_2 \mathrm{O} \] In this reaction, ethane is broken down, and its hydrogen atoms bond with oxygen to create water. The real magic happens when you consider that a single molecule of ethane contains six hydrogen atoms. When it combusts, these hydrogens eagerly unite with oxygen, showcasing how vital hydrocarbons are not just sources of fuel but also forms of water producer during combustion! To understand this better, let's consider that ethane, a simple hydrocarbon, is composed primarily of carbon and hydrogen. When it burns in oxygen, it releases energy in the form of heat and light. This reaction illustrates the principle of conservation of mass, as all atoms involved—carbon, hydrogen, and oxygen—are rearranged and retained in the products, showcasing the wonders of chemical reactions in our everyday life, especially in energy generation!