An exothermic reaction is accompanied by a decrease in entropy. how would this reaction be classified?

An exothermic reaction that is accompanied by a decrease in entropy would be classified as a spontaneous reaction. A spontaneous reaction is a reaction that favors the formation of products under the conditions in which the reaction is occurring.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .