What do chemists express the rates of chemical reaction?

They represented rate of chemical reactions are the rate of change in concentration of products or reactants in a reaction

Rate of a chemical reaction = change in concentration of a reactant or product per unit time.

It can be expressed in two terms:

1) The rate of decrease in concentration of any of the reactants.

2) The rate of increase in the concentration of any of the products.

Explanation:

Rate of reaction is the speed at which reactants are converted into products or the rate at which products are produced from reactants.

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

mark brainliest and have a great day!