Normally, after a chemical reaction you cannot change the products back into their starting form. ashes cannot become a log again. there are some reactions, however, that can return to their original forms. these reactions are called a. transformative b. reversible c. two-way d. regressive

B. Reversible

Explanation:

Some chemical changes can be reversed through other chemical changes. These reactions are called reversible chemical reactions.

B. Reversible

Explanation:

In a reversible reaction the products can turn into reactants whereas in an irreversible reaction the reactants can get converted into product but the products cannot convert back into reactants.  In a reversible reaction the rate of the forward reaction is equal to the rate of the backward reaction. A dynamic equilibrium is established when such a thing happens.

what's the

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa