Biết hằng số tốc độ phân hủy H2O2: k= 7,3.10^-4 s^-1. Mất bao lâu để lượng mẫu [H2O2] bị phân hủy 2/3 so với thời điểm bắt đầu phản ứng. Biết phản ứng phân hủy H2O2 tuân theo động học bậc 1. H2O2 → H2O+ 1/2 O2

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

the answers are

c and c