Final answer:
The correct balanced equation for the combustion of ethane gas is 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O (g).
Step-by-step explanation:
The correct answer is option c) 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O (g).
To balance the equation, we need to ensure that the number of atoms on both sides of the equation is equal. In this case, we have 4 carbon atoms and 12 hydrogen atoms on the left side, and 4 carbon atoms and 12 hydrogen atoms on the right side. Thus, the equation is balanced.
The state symbols (g) indicate that carbon dioxide and water are in the gas state.