Look at the chemical equation above. What is the purpose of the numbers in the red boxes? A. These coefficients show how many atoms of product will be formed during the reaction. B. These coefficients show how many elements are used in each chemical formula. C. These coefficients show how many particles of each substance are used in the reaction. D. These coefficients show how many substances are used in the reaction

cuz he's blad

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

looks like the answer is     c     to me!