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

How can one make a supersaturated solution? (apex)

Ab c or d ? i’m not sure what the answer is

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.