Which of the folowing alkanes can exhibit optical acitivity?(A)2-methylbutane,(B)2,3- Dimethylbutane,(C)3-methylpentane,( D)cyclobutane

- "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)."

the answer is learned

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

the dissolution of polymer can be thermodynamically described in 2 steps.