The decomposition of water into hydrogen gas H2 and oxygen gay 02 can be modeled by the balanced chemical equation

the atomic mass is the bottom number on the element.

-steel jelly

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.