Chemical reactions yield a) Products
b) Reagents
c) Reactants
d) All of the above

products

Explanation:

chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.