Answer:decomposition reaction
Explanation:it is a decomposition reaction
Jim, because he ran a greater distance in the same time :)
By the way, this is a maths question
Answer:
Biological Functions: processes and structures by which organisms adjust to short-term or long-term changes in their environment
It would be Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms. It has 5 atoms total. There is 1 magnesium and you multiply each element by the the 2 outside the parenthesis to get 2 oxygen and 2 hydrogen.