Question

Write the complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2). You do not need to make the subscripts smaller; just write them out as regular numbers. For example: O2.

Answer 1

The reaction between aluminum metal (Al) and oxygen gas (O2) will yield a product called aluminum oxide with the chemical formula, Al2O3. The reaction is shown below,
Al + O2 ---> Al2O3
We need to multiply Al by 2 and O2 by 3/2. To eliminate the fraction, multiply both sides of the chemical reaction by 2. These operations give a final answer of,
4Al + 3O2 ---> 2Al2O3