What are the attributes of altocumulus clouds?

Characteristics. A characteristic of this cloud is Coronae - one or more colored rings around the sun or moon when viewed from below the cloud. Ac comprising small, but distinctive, cumuliform clouds indicates rapidly forming mid level cloud in unstable conditions (Ac Castellanos).

Explanation:

answer; i believe that the correct answer is (a) potassium(k)

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.