hydrogen peroxide slowly decomposes into water and oxygen. the enthalpy change of reaction can be calculated using standard enthalpies of formation. Using a Hess cycle what is the enthalpy change of reaction for this decomposition

An example of technology is the a. addition of a side group to an organic molecule during synthesis. b. use of a new antibiotic to fight an infection. c. measurement of iron concentration in a water sample. d. study of atomic fusion reactions

How much energy moves onto the next level, in an energy pyramid

Idon’t know how to solve this question