H2o2, hydrogen peroxide, naturally breaks down into h2o and o2 over time. mno2, manganese dioxide, can be used to lower the energy of activation needed for this reaction to take place and, thus, increase the rate of reaction. what type of substance is mno2 ?

a. a reactant

b. an inhibitor

c. an enhancer

d. a catalyst

The answer is A because it is a reactant

i would say b

explanation:

but i think i would need more information than that

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.