Write a balanced chemical equation for the reaction of gaseous nitrogen dioxide with hydrogen gas to form gaseous ammonia and liquid water
express your answer as a chemical equation. identify all of the phases in your answer.

The reaction is this one:

2NO₂ (g) + 7H₂(g) → 2NH₃ (g) + 4H₂O (l)

Explanation:

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."