How Do You Determine How Many Atoms Of Each Element Are Present?
The number to the bottom right tells you how many atoms of a certain element are present: (example O2 would be 2 atoms of oxygen). If there is no number then you assume that it is a one: (example H would be 1 atom of hydrogen). If a number is to the bottom right of a parentheses then it applies to all elements in the parentheses: (example (CO)2 would be 2 carbon atoms and 2 oxygen atoms ). If an element in the parentheses already has a number next to it then you multiply the number next to the element times the number outside of the parentheses. Example (H2O)6 would be 12 hydrogen atoms and 6 oxygen atoms.
