In an experiment, 0.46 mol H2(g) and 0.46 mol Br2(g) are mixed in a 1.00 L container at 500.0 K and the reaction forms HBr(g). What is the equilibrium concentration of HBr

- "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)."