Construct a balanced equation for the decomposition of ammonia, including state symbols.

The decomposition of ammonia (NH3) is a reaction in which ammonia breaks down into its constituent elements, nitrogen (N2) and hydrogen (H2). Here's how you can write the balanced equation for this reaction, including state symbols:

Step 1: Write the unbalanced equation NH3(g) → N2(g) + H2(g)

Step 2: Balance the equation The unbalanced equation doesn't have the same number of each type of atom on both sides of the equation. To balance it, we need to adjust the number of molecules of each compound until the number of atoms of each element is the same on both sides.

In this case, we have 3 hydrogen atoms on the left side (from NH3) and 2 on the right side (from H2). We also have 1 nitrogen atom on the left side (from NH3) and 2 on the right side (from N2).

To balance the hydrogen atoms, we can put a coefficient of 3 in front of H2 on the right side. To balance the nitrogen atoms, we can put a coefficient of 2 in front of NH3 on the left side.

This gives us the balanced equation:

2NH3(g) → N2(g) + 3H2(g)

So, the balanced equation for the decomposition of ammonia, including state symbols, is 2NH3(g) → N2(g) + 3H2(g).