Quantitative+Information+from+Balanced+Equations

=QUANTITATIVE INFORMATION FROM BALANCED EQUATIONS =
 * the relative numbers of molecules involved in the reaction
 * the relative number of moles.

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 * The subscripts specify the amount of atoms of each element in each compound.
 * If there are parenthesis around a molecule and a subscript outside of the parenthesis, it specifies the amount of molecules of the compund in the larger compound

Finding the amount in grams of a product
- If you multiply the coefficent times the subscript(s) that will give you the amount of molecules of each element within the compound - In order to find the amount of grams you multiply the amount of molecules times the atomic weight of the atom

Percent Composition
- In order to find the percent composition you must first convert all of the substances into grams. - Divide the amount in grams of the substance that you are trying to find the percent composition of by the total amount in grams of the reaction - Multiply by 100

Example for above Hydrogen --> coefficent x subscript = 4. 4 x atomic weight = 4 x 1 = 4 Oxygen --> coefficent x subscript = 2. 2 x atomic weight = 2 x 16 = 32 32 + 4 = 36 Hydrogen composition = 4/36 = .111 x 100 = 11.1% Oxygen Composition = 32/36 = .889 = 88.9%