Which statement best describes what is taking place in this half reaction?

What forms when chemical reactions combine pollution with sunlight?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules