How many atoms of hydrogen are involved in the formation of two molecules of water are depicted by this chemical equation: 2 h2 + o2 > 2 h2o (a) 1 (b) 4 (c) 2 (d) 8

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Which is not true regarding reaction rates? (2 points) catalysts are not used up in the reaction. catalysts speed up reactions by lowering the activation energy. reaction rates decrease as the concentration of reactants decrease. during reactions, concentrations of all reactants decrease at the same rate.

How does changing the surface area increase the reaction rate of a chemical change