A29.00 ml sample of an unknown h3po4 solution is titrated with a 0.130 m naoh solution. the equivalence point is reached when 27.73 ml of naoh solution is added.

- "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)."

that's what i got you can count the number of atoms